Some sentence examples which use the word 'preponderant'
Melancholy is the preponderant mood for writing a poem.
Probably in point of number of species the preponderant family is Orchideae, though, as Hemsley remarks, they do not give character to the scenery, or constitute the bulk of the vegetation.
Darwin thought that the migration southwards would always be preponderant (Origin of Species, 5th ed., 458).