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Finding the Fourth Proportional to 168,691.88, 252,912.85 and 102,116.30

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Solution

The fourth proportional to 168,691.88, 252,912.85 and 102,116.30 is: 153,098.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,691.88 : 252,912.85 = 102,116.30 : x
  2. Step 2: Convert to fraction form
    168,691.88/252,912.85 = 102,116.30/x
  3. Step 3: Cross multiply
    168,691.88x = 252,912.85 × 102,116.30
  4. Step 4: Simplify right side
    168,691.88x = 25,826,522,944.60
  5. Step 5: Solve for x
    x = 25,826,522,944.60/168,691.88
  6. Step 6: Final answer
    x = 153,098.79

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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.