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Finding the Fourth Proportional to 120,729.52, 166,609.38 and 67,013.74

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Solution

The fourth proportional to 120,729.52, 166,609.38 and 67,013.74 is: 92,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,729.52 : 166,609.38 = 67,013.74 : x
  2. Step 2: Convert to fraction form
    120,729.52/166,609.38 = 67,013.74/x
  3. Step 3: Cross multiply
    120,729.52x = 166,609.38 × 67,013.74
  4. Step 4: Simplify right side
    120,729.52x = 11,165,117,672.88
  5. Step 5: Solve for x
    x = 11,165,117,672.88/120,729.52
  6. Step 6: Final answer
    x = 92,480.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.