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Finding the Fourth Proportional to 150,545.60, 207,780 and 86,874.56

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Solution

The fourth proportional to 150,545.60, 207,780 and 86,874.56 is: 119,902.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,545.60 : 207,780 = 86,874.56 : x
  2. Step 2: Convert to fraction form
    150,545.60/207,780 = 86,874.56/x
  3. Step 3: Cross multiply
    150,545.60x = 207,780 × 86,874.56
  4. Step 4: Simplify right side
    150,545.60x = 18,050,796,076.80
  5. Step 5: Solve for x
    x = 18,050,796,076.80/150,545.60
  6. Step 6: Final answer
    x = 119,902.52

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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.