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Finding the Fourth Proportional to 122,422.52, 168,937.98 and 68,711.96

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Solution

The fourth proportional to 122,422.52, 168,937.98 and 68,711.96 is: 94,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,422.52 : 168,937.98 = 68,711.96 : x
  2. Step 2: Convert to fraction form
    122,422.52/168,937.98 = 68,711.96/x
  3. Step 3: Cross multiply
    122,422.52x = 168,937.98 × 68,711.96
  4. Step 4: Simplify right side
    122,422.52x = 11,608,059,724.24
  5. Step 5: Solve for x
    x = 11,608,059,724.24/122,422.52
  6. Step 6: Final answer
    x = 94,819.64

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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.