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Finding the Fourth Proportional to 131,711.60, 197,340.60 and 61,446.80

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Solution

The fourth proportional to 131,711.60, 197,340.60 and 61,446.80 is: 92,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,711.60 : 197,340.60 = 61,446.80 : x
  2. Step 2: Convert to fraction form
    131,711.60/197,340.60 = 61,446.80/x
  3. Step 3: Cross multiply
    131,711.60x = 197,340.60 × 61,446.80
  4. Step 4: Simplify right side
    131,711.60x = 12,125,948,380.08
  5. Step 5: Solve for x
    x = 12,125,948,380.08/131,711.60
  6. Step 6: Final answer
    x = 92,064.39

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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.