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Finding the Fourth Proportional to 120,310.60, 180,077.10 and 93,872.20

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Solution

The fourth proportional to 120,310.60, 180,077.10 and 93,872.20 is: 140,504.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,310.60 : 180,077.10 = 93,872.20 : x
  2. Step 2: Convert to fraction form
    120,310.60/180,077.10 = 93,872.20/x
  3. Step 3: Cross multiply
    120,310.60x = 180,077.10 × 93,872.20
  4. Step 4: Simplify right side
    120,310.60x = 16,904,233,546.62
  5. Step 5: Solve for x
    x = 16,904,233,546.62/120,310.60
  6. Step 6: Final answer
    x = 140,504.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.