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Finding the Fourth Proportional to 157,662.46, 217,579.28 and 89,677.68

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Solution

The fourth proportional to 157,662.46, 217,579.28 and 89,677.68 is: 123,758.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,662.46 : 217,579.28 = 89,677.68 : x
  2. Step 2: Convert to fraction form
    157,662.46/217,579.28 = 89,677.68/x
  3. Step 3: Cross multiply
    157,662.46x = 217,579.28 × 89,677.68
  4. Step 4: Simplify right side
    157,662.46x = 19,512,005,046.47
  5. Step 5: Solve for x
    x = 19,512,005,046.47/157,662.46
  6. Step 6: Final answer
    x = 123,758.09

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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.