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Finding the Fourth Proportional to 122,566.64, 169,123.54 and 68,841.36

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Solution

The fourth proportional to 122,566.64, 169,123.54 and 68,841.36 is: 94,990.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,566.64 : 169,123.54 = 68,841.36 : x
  2. Step 2: Convert to fraction form
    122,566.64/169,123.54 = 68,841.36/x
  3. Step 3: Cross multiply
    122,566.64x = 169,123.54 × 68,841.36
  4. Step 4: Simplify right side
    122,566.64x = 11,642,694,501.61
  5. Step 5: Solve for x
    x = 11,642,694,501.61/122,566.64
  6. Step 6: Final answer
    x = 94,990.73

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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.