Home / 138,691.12-207,910.32-49,923.76

Finding the Fourth Proportional to 138,691.12, 207,910.32 and 49,923.76

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Solution

The fourth proportional to 138,691.12, 207,910.32 and 49,923.76 is: 74,840.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,691.12 : 207,910.32 = 49,923.76 : x
  2. Step 2: Convert to fraction form
    138,691.12/207,910.32 = 49,923.76/x
  3. Step 3: Cross multiply
    138,691.12x = 207,910.32 × 49,923.76
  4. Step 4: Simplify right side
    138,691.12x = 10,379,664,917.20
  5. Step 5: Solve for x
    x = 10,379,664,917.20/138,691.12
  6. Step 6: Final answer
    x = 74,840.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.