Home / 138,640,931.29-191,330,463.90-76,761,269.92

Finding the Fourth Proportional to 138,640,931.29, 191,330,463.90 and 76,761,269.92

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Solution

The fourth proportional to 138,640,931.29, 191,330,463.90 and 76,761,269.92 is: 105,933,862.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,640,931.29 : 191,330,463.90 = 76,761,269.92 : x
  2. Step 2: Convert to fraction form
    138,640,931.29/191,330,463.90 = 76,761,269.92/x
  3. Step 3: Cross multiply
    138,640,931.29x = 191,330,463.90 × 76,761,269.92
  4. Step 4: Simplify right side
    138,640,931.29x = 14,686,769,383,346,716
  5. Step 5: Solve for x
    x = 14,686,769,383,346,716/138,640,931.29
  6. Step 6: Final answer
    x = 105,933,862.73

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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.