I don't think so, although there were some episodes with some kind of relation.
- the kid handed balloons from a vendor. (how many party balloons to lift a kid)
- the inflatable raft filled with helium. (I think that's the one with the 100x100+ helium raft)

Yea, that pops up ones in a while (if you excuse the pun)
The Ultimate Lazyboy
Lawn chair & 105 helium balloons: Up, up and awaaaay!
If you connect yourself to many small helium balloons,
Armchair pilots - myth or reality

Oooh; I'll have to reference that post as an update to this one.
Balloon priest missing
I find it suprising that the update never hit the thread. It was last updated on the same day as most of the posts there.

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Numbers are not case sensitive. (me)