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Finding the Fourth Proportional to 131,691.60, 197,440.20 and 56,750.40

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Solution

The fourth proportional to 131,691.60, 197,440.20 and 56,750.40 is: 85,083.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,691.60 : 197,440.20 = 56,750.40 : x
  2. Step 2: Convert to fraction form
    131,691.60/197,440.20 = 56,750.40/x
  3. Step 3: Cross multiply
    131,691.60x = 197,440.20 × 56,750.40
  4. Step 4: Simplify right side
    131,691.60x = 11,204,810,326.08
  5. Step 5: Solve for x
    x = 11,204,810,326.08/131,691.60
  6. Step 6: Final answer
    x = 85,083.71

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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.