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Finding the Fourth Proportional to 120,473.97, 166,255.05 and 66,759.88

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Solution

The fourth proportional to 120,473.97, 166,255.05 and 66,759.88 is: 92,129.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,473.97 : 166,255.05 = 66,759.88 : x
  2. Step 2: Convert to fraction form
    120,473.97/166,255.05 = 66,759.88/x
  3. Step 3: Cross multiply
    120,473.97x = 166,255.05 × 66,759.88
  4. Step 4: Simplify right side
    120,473.97x = 11,099,167,562.11
  5. Step 5: Solve for x
    x = 11,099,167,562.11/120,473.97
  6. Step 6: Final answer
    x = 92,129.18

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1.5x scale

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.