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Finding the Fourth Proportional to 157,229.48, 217,120.84 and 99,887.24

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Solution

The fourth proportional to 157,229.48, 217,120.84 and 99,887.24 is: 137,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,229.48 : 217,120.84 = 99,887.24 : x
  2. Step 2: Convert to fraction form
    157,229.48/217,120.84 = 99,887.24/x
  3. Step 3: Cross multiply
    157,229.48x = 217,120.84 × 99,887.24
  4. Step 4: Simplify right side
    157,229.48x = 21,687,601,454.08
  5. Step 5: Solve for x
    x = 21,687,601,454.08/157,229.48
  6. Step 6: Final answer
    x = 137,935.97

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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.