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Finding the Fourth Proportional to 123,056.78, 169,818.35 and 66,468.15

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Solution

The fourth proportional to 123,056.78, 169,818.35 and 66,468.15 is: 91,726.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,056.78 : 169,818.35 = 66,468.15 : x
  2. Step 2: Convert to fraction form
    123,056.78/169,818.35 = 66,468.15/x
  3. Step 3: Cross multiply
    123,056.78x = 169,818.35 × 66,468.15
  4. Step 4: Simplify right side
    123,056.78x = 11,287,511,228.21
  5. Step 5: Solve for x
    x = 11,287,511,228.21/123,056.78
  6. Step 6: Final answer
    x = 91,726.04

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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.