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Finding the Fourth Proportional to 112,863.30, 169,296.39 and 77,793.54

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Solution

The fourth proportional to 112,863.30, 169,296.39 and 77,793.54 is: 116,691.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,863.30 : 169,296.39 = 77,793.54 : x
  2. Step 2: Convert to fraction form
    112,863.30/169,296.39 = 77,793.54/x
  3. Step 3: Cross multiply
    112,863.30x = 169,296.39 × 77,793.54
  4. Step 4: Simplify right side
    112,863.30x = 13,170,165,487.32
  5. Step 5: Solve for x
    x = 13,170,165,487.32/112,863.30
  6. Step 6: Final answer
    x = 116,691.30

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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.