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Finding the Fourth Proportional to 132,331.20, 198,496.80 and 53,404.80

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Solution

The fourth proportional to 132,331.20, 198,496.80 and 53,404.80 is: 80,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,331.20 : 198,496.80 = 53,404.80 : x
  2. Step 2: Convert to fraction form
    132,331.20/198,496.80 = 53,404.80/x
  3. Step 3: Cross multiply
    132,331.20x = 198,496.80 × 53,404.80
  4. Step 4: Simplify right side
    132,331.20x = 10,600,681,904.64
  5. Step 5: Solve for x
    x = 10,600,681,904.64/132,331.20
  6. Step 6: Final answer
    x = 80,107.20

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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.