Home / 138,721,508.87-191,282,304.80-88,406,060.83

Finding the Fourth Proportional to 138,721,508.87, 191,282,304.80 and 88,406,060.83

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Solution

The fourth proportional to 138,721,508.87, 191,282,304.80 and 88,406,060.83 is: 121,902,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,721,508.87 : 191,282,304.80 = 88,406,060.83 : x
  2. Step 2: Convert to fraction form
    138,721,508.87/191,282,304.80 = 88,406,060.83/x
  3. Step 3: Cross multiply
    138,721,508.87x = 191,282,304.80 × 88,406,060.83
  4. Step 4: Simplify right side
    138,721,508.87x = 16,910,515,072,452,958
  5. Step 5: Solve for x
    x = 16,910,515,072,452,958/138,721,508.87
  6. Step 6: Final answer
    x = 121,902,617.77

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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.