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Finding the Fourth Proportional to 123,034.59, 169,787.70 and 66,445.98

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Solution

The fourth proportional to 123,034.59, 169,787.70 and 66,445.98 is: 91,695.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,034.59 : 169,787.70 = 66,445.98 : x
  2. Step 2: Convert to fraction form
    123,034.59/169,787.70 = 66,445.98/x
  3. Step 3: Cross multiply
    123,034.59x = 169,787.70 × 66,445.98
  4. Step 4: Simplify right side
    123,034.59x = 11,281,710,118.45
  5. Step 5: Solve for x
    x = 11,281,710,118.45/123,034.59
  6. Step 6: Final answer
    x = 91,695.43

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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.