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Finding the Fourth Proportional to 157,129.79, 216,844.02 and 89,149.62

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Solution

The fourth proportional to 157,129.79, 216,844.02 and 89,149.62 is: 123,029.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,129.79 : 216,844.02 = 89,149.62 : x
  2. Step 2: Convert to fraction form
    157,129.79/216,844.02 = 89,149.62/x
  3. Step 3: Cross multiply
    157,129.79x = 216,844.02 × 89,149.62
  4. Step 4: Simplify right side
    157,129.79x = 19,331,561,982.27
  5. Step 5: Solve for x
    x = 19,331,561,982.27/157,129.79
  6. Step 6: Final answer
    x = 123,029.27

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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.