Hey, sorry for opening this discussion again, but I have a very similar problem for a different configuration, this time i have to do the same thing for 7 circles. Everyone of them has a different diameter, I’m no expert in geometry, but I think that this time it’s not a possible solution to have every circle tangent to each other:
I found some discussion about circle packing, and it does what i would like to obtain, but it would be great to do it in a way that doesn’t need a physics simulation: