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Finding the Fourth Proportional to 132,031.60, 197,901.60 and 72,909.70

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Solution

The fourth proportional to 132,031.60, 197,901.60 and 72,909.70 is: 109,284.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,031.60 : 197,901.60 = 72,909.70 : x
  2. Step 2: Convert to fraction form
    132,031.60/197,901.60 = 72,909.70/x
  3. Step 3: Cross multiply
    132,031.60x = 197,901.60 × 72,909.70
  4. Step 4: Simplify right side
    132,031.60x = 14,428,946,285.52
  5. Step 5: Solve for x
    x = 14,428,946,285.52/132,031.60
  6. Step 6: Final answer
    x = 109,284.04

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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.