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Finding the Fourth Proportional to 157,739.92, 217,672.56 and 89,754.88

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Solution

The fourth proportional to 157,739.92, 217,672.56 and 89,754.88 is: 123,856.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,739.92 : 217,672.56 = 89,754.88 : x
  2. Step 2: Convert to fraction form
    157,739.92/217,672.56 = 89,754.88/x
  3. Step 3: Cross multiply
    157,739.92x = 217,672.56 × 89,754.88
  4. Step 4: Simplify right side
    157,739.92x = 19,537,174,502.09
  5. Step 5: Solve for x
    x = 19,537,174,502.09/157,739.92
  6. Step 6: Final answer
    x = 123,856.88

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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.