Home / 129,587.20-178,832.12-72,224.92

Finding the Fourth Proportional to 129,587.20, 178,832.12 and 72,224.92

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Solution

The fourth proportional to 129,587.20, 178,832.12 and 72,224.92 is: 99,671.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,587.20 : 178,832.12 = 72,224.92 : x
  2. Step 2: Convert to fraction form
    129,587.20/178,832.12 = 72,224.92/x
  3. Step 3: Cross multiply
    129,587.20x = 178,832.12 × 72,224.92
  4. Step 4: Simplify right side
    129,587.20x = 12,916,135,560.43
  5. Step 5: Solve for x
    x = 12,916,135,560.43/129,587.20
  6. Step 6: Final answer
    x = 99,671.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.