PROPORTIONABLE
proportionable
(adjective) proportionate
Source: WordNet® 3.1
Etymology
Adjective
proportionable (comparative more proportionable, superlative most proportionable)
Capable of being proportioned, or made proportional.
In the correct proportion; proportional; commensurable.
Antonyms
• unproportionable
Source: Wiktionary
Pro*por"tion*a*ble, a.
Definition: Capable of being proportioned, or made proportional; also,
proportional; proportionate.
– Pro*por"tion*a*ble*ness, n.
But eloquence may exist without a proportionable degree of wisdom.
Burke.
Proportionable, which is no longer much favored, was of our [i. e.,
English writers'] own coining. Fitzed. Hall.
Source: Webster’s Unabridged Dictionary 1913 Edition