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Finding the Fourth Proportional to 123,076.06, 169,845.12 and 66,487.43

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Solution

The fourth proportional to 123,076.06, 169,845.12 and 66,487.43 is: 91,752.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,076.06 : 169,845.12 = 66,487.43 : x
  2. Step 2: Convert to fraction form
    123,076.06/169,845.12 = 66,487.43/x
  3. Step 3: Cross multiply
    123,076.06x = 169,845.12 × 66,487.43
  4. Step 4: Simplify right side
    123,076.06x = 11,292,565,951.45
  5. Step 5: Solve for x
    x = 11,292,565,951.45/123,076.06
  6. Step 6: Final answer
    x = 91,752.74

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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.