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Finding the Fourth Proportional to 123,344.60, 170,216.02 and 66,755.96

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Solution

The fourth proportional to 123,344.60, 170,216.02 and 66,755.96 is: 92,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,344.60 : 170,216.02 = 66,755.96 : x
  2. Step 2: Convert to fraction form
    123,344.60/170,216.02 = 66,755.96/x
  3. Step 3: Cross multiply
    123,344.60x = 170,216.02 × 66,755.96
  4. Step 4: Simplify right side
    123,344.60x = 11,362,933,822.48
  5. Step 5: Solve for x
    x = 11,362,933,822.48/123,344.60
  6. Step 6: Final answer
    x = 92,123.48

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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.