Home / 131,126,472.38-180,949,779-72,387,873.29

Finding the Fourth Proportional to 131,126,472.38, 180,949,779 and 72,387,873.29

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Solution

The fourth proportional to 131,126,472.38, 180,949,779 and 72,387,873.29 is: 99,892,641.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,126,472.38 : 180,949,779 = 72,387,873.29 : x
  2. Step 2: Convert to fraction form
    131,126,472.38/180,949,779 = 72,387,873.29/x
  3. Step 3: Cross multiply
    131,126,472.38x = 180,949,779 × 72,387,873.29
  4. Step 4: Simplify right side
    131,126,472.38x = 13,098,569,673,200,754
  5. Step 5: Solve for x
    x = 13,098,569,673,200,754/131,126,472.38
  6. Step 6: Final answer
    x = 99,892,641.33

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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.