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Finding the Fourth Proportional to 173,845.80, 260,691.90 and 80,380.20

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Solution

The fourth proportional to 173,845.80, 260,691.90 and 80,380.20 is: 120,534.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,845.80 : 260,691.90 = 80,380.20 : x
  2. Step 2: Convert to fraction form
    173,845.80/260,691.90 = 80,380.20/x
  3. Step 3: Cross multiply
    173,845.80x = 260,691.90 × 80,380.20
  4. Step 4: Simplify right side
    173,845.80x = 20,954,467,060.38
  5. Step 5: Solve for x
    x = 20,954,467,060.38/173,845.80
  6. Step 6: Final answer
    x = 120,534.79

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1.5x scale

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.