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Finding the Fourth Proportional to 157,311.53, 217,082.90 and 91,906.42

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Solution

The fourth proportional to 157,311.53, 217,082.90 and 91,906.42 is: 126,826.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,311.53 : 217,082.90 = 91,906.42 : x
  2. Step 2: Convert to fraction form
    157,311.53/217,082.90 = 91,906.42/x
  3. Step 3: Cross multiply
    157,311.53x = 217,082.90 × 91,906.42
  4. Step 4: Simplify right side
    157,311.53x = 19,951,312,182.22
  5. Step 5: Solve for x
    x = 19,951,312,182.22/157,311.53
  6. Step 6: Final answer
    x = 126,826.76

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1.5x scale

Why These Related Problems?

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