I am trying to figure out a ground clearance question... For example, say I have an RV and I know the center of front wheel to center of rear wheel is 144" in length and has a ground clearance (from ground to underbelly) of 26" (of course hypothetical). Is there a way to calculate the minimum ground clearance based on this information if I stretched that RV to have a wheel base of say 192"? Can I just extrapolate (i.e 144/26 = 192/x) or is it just not that easy and I need more information?