100
Put in order from smallest to greatest.
1/3, 1/9, 1/2, 1/100
1/100, 1/3, 1/9, 1/2 because they each only have 1 piece shaded, but the whole is divided into different size parts. The fewer the amount of parts the bigger the piece, so the biggest denominator is actually the smallest value and the smallest denominator is actually the largest value.