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Finding the Fourth Proportional to 131,508, 197,287.92 and 42,763.68

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Solution

The fourth proportional to 131,508, 197,287.92 and 42,763.68 is: 64,153.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,508 : 197,287.92 = 42,763.68 : x
  2. Step 2: Convert to fraction form
    131,508/197,287.92 = 42,763.68/x
  3. Step 3: Cross multiply
    131,508x = 197,287.92 × 42,763.68
  4. Step 4: Simplify right side
    131,508x = 8,436,757,478.75
  5. Step 5: Solve for x
    x = 8,436,757,478.75/131,508
  6. Step 6: Final answer
    x = 64,153.95

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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.