Home / 112,612.80-154,577.79-99,580.41

Finding the Fourth Proportional to 112,612.80, 154,577.79 and 99,580.41

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Solution

The fourth proportional to 112,612.80, 154,577.79 and 99,580.41 is: 136,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,612.80 : 154,577.79 = 99,580.41 : x
  2. Step 2: Convert to fraction form
    112,612.80/154,577.79 = 99,580.41/x
  3. Step 3: Cross multiply
    112,612.80x = 154,577.79 × 99,580.41
  4. Step 4: Simplify right side
    112,612.80x = 15,392,919,705.09
  5. Step 5: Solve for x
    x = 15,392,919,705.09/112,612.80
  6. Step 6: Final answer
    x = 136,688.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.