Home / 138,721,509.87-191,282,306.17-88,406,061.83

Finding the Fourth Proportional to 138,721,509.87, 191,282,306.17 and 88,406,061.83

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Solution

The fourth proportional to 138,721,509.87, 191,282,306.17 and 88,406,061.83 is: 121,902,619.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721,509.87 : 191,282,306.17 = 88,406,061.83 : x
  2. Step 2: Convert to fraction form
    138,721,509.87/191,282,306.17 = 88,406,061.83/x
  3. Step 3: Cross multiply
    138,721,509.87x = 191,282,306.17 × 88,406,061.83
  4. Step 4: Simplify right side
    138,721,509.87x = 16,910,515,386,250,008
  5. Step 5: Solve for x
    x = 16,910,515,386,250,008/138,721,509.87
  6. Step 6: Final answer
    x = 121,902,619.15

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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.