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Finding the Fourth Proportional to 122,311.92, 168,799.02 and 67,881.90

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Solution

The fourth proportional to 122,311.92, 168,799.02 and 67,881.90 is: 93,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,311.92 : 168,799.02 = 67,881.90 : x
  2. Step 2: Convert to fraction form
    122,311.92/168,799.02 = 67,881.90/x
  3. Step 3: Cross multiply
    122,311.92x = 168,799.02 × 67,881.90
  4. Step 4: Simplify right side
    122,311.92x = 11,458,398,195.74
  5. Step 5: Solve for x
    x = 11,458,398,195.74/122,311.92
  6. Step 6: Final answer
    x = 93,681.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.