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Finding the Fourth Proportional to 122,558, 169,144.60 and 68,843.12

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Solution

The fourth proportional to 122,558, 169,144.60 and 68,843.12 is: 95,011.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,558 : 169,144.60 = 68,843.12 : x
  2. Step 2: Convert to fraction form
    122,558/169,144.60 = 68,843.12/x
  3. Step 3: Cross multiply
    122,558x = 169,144.60 × 68,843.12
  4. Step 4: Simplify right side
    122,558x = 11,644,441,995.15
  5. Step 5: Solve for x
    x = 11,644,441,995.15/122,558
  6. Step 6: Final answer
    x = 95,011.68

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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.