Home / 120,540.60-180,638.10-88,702.20

Finding the Fourth Proportional to 120,540.60, 180,638.10 and 88,702.20

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Solution

The fourth proportional to 120,540.60, 180,638.10 and 88,702.20 is: 132,926.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,540.60 : 180,638.10 = 88,702.20 : x
  2. Step 2: Convert to fraction form
    120,540.60/180,638.10 = 88,702.20/x
  3. Step 3: Cross multiply
    120,540.60x = 180,638.10 × 88,702.20
  4. Step 4: Simplify right side
    120,540.60x = 16,022,996,873.82
  5. Step 5: Solve for x
    x = 16,022,996,873.82/120,540.60
  6. Step 6: Final answer
    x = 132,926.14

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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.