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Finding the Fourth Proportional to 132,569.76, 198,463.91 and 87,507.98

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Solution

The fourth proportional to 132,569.76, 198,463.91 and 87,507.98 is: 131,004.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,569.76 : 198,463.91 = 87,507.98 : x
  2. Step 2: Convert to fraction form
    132,569.76/198,463.91 = 87,507.98/x
  3. Step 3: Cross multiply
    132,569.76x = 198,463.91 × 87,507.98
  4. Step 4: Simplify right side
    132,569.76x = 17,367,175,181.38
  5. Step 5: Solve for x
    x = 17,367,175,181.38/132,569.76
  6. Step 6: Final answer
    x = 131,004.04

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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.