Where does “porke” come from?

porke (Bikol Central) comes from Spanish porqué, from Spanish por qué, from Spanish por, from Old Spanish por, from Vulgar Latin por, from Latin prō, from Latin ratus, from Latin rēōr — to fit, to fix, to put together.

Ancestry of “porke”, step by step

StepLanguageWordMeaning
1Spanishporquéa reason
2Spanishpor quéwhy, for what reason
3Spanishporby; for; through, out, via
4Old Spanishpor
5Vulgar Latinporfor
6Latinprōfor
7Latinratusconsidered, having been considered; established,...
8Latinrēōrto reckon, calculate
9Proto-Italicrēōrto reckon, to calculate; to think, to deem, to...
10Proto-Indo-Europeanh₂reh₁-to think, reason; to arrange
11Proto-Indo-Europeanh₂er-to fit, to fix, to put together
Every word from Proto-Indo-European h₂er-