Use Same Scale for Avis and Bubble Sizes in Bubble Size Chart Excel

I’ve been dwelling on the Internet for a long time before understanding how Bubble Charts work in Excel. Now it seems logical to me that the Bubbles have their own scale to represent data in a way that is neat and clean for the average user.

However, I’m facing a problem where I need to have the option to get “real-sized” Bubbles on a Bubble Chart. And I’m a bit desperate on how to achieve this in a simple way.

I need to display costs estimates, alongside with an end date, and a risk that’s also an amount in dollars. I want to be able to display them as bubbles, so that each month, we can easily see the variation in cost, delay, and risk estimates.

To me, the simplest way to display all of it is the Bubble Chart. But the Bubbles are not scaled the same as the Y-Axis.

My data looks as follows :

Raw Table Data

Bubble Graph Representation

My questions are :

• How can I scale the Bubble Size to the same value as the Y-Axis ?
• Is there a better way for me to do this rather than the solution I’m using?