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Finding the Fourth Proportional to 154,082.60, 231,200.70 and 87,573.80

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Solution

The fourth proportional to 154,082.60, 231,200.70 and 87,573.80 is: 131,404.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,082.60 : 231,200.70 = 87,573.80 : x
  2. Step 2: Convert to fraction form
    154,082.60/231,200.70 = 87,573.80/x
  3. Step 3: Cross multiply
    154,082.60x = 231,200.70 × 87,573.80
  4. Step 4: Simplify right side
    154,082.60x = 20,247,123,861.66
  5. Step 5: Solve for x
    x = 20,247,123,861.66/154,082.60
  6. Step 6: Final answer
    x = 131,404.35

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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.