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Finding the Fourth Proportional to 169,265.61, 253,832.76 and 90,336.78

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Solution

The fourth proportional to 169,265.61, 253,832.76 and 90,336.78 is: 135,470.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,265.61 : 253,832.76 = 90,336.78 : x
  2. Step 2: Convert to fraction form
    169,265.61/253,832.76 = 90,336.78/x
  3. Step 3: Cross multiply
    169,265.61x = 253,832.76 × 90,336.78
  4. Step 4: Simplify right side
    169,265.61x = 22,930,434,196.91
  5. Step 5: Solve for x
    x = 22,930,434,196.91/169,265.61
  6. Step 6: Final answer
    x = 135,470.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.