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Finding the Fourth Proportional to 169,256.61, 253,819.26 and 90,327.78

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Solution

The fourth proportional to 169,256.61, 253,819.26 and 90,327.78 is: 135,456.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,256.61 : 253,819.26 = 90,327.78 : x
  2. Step 2: Convert to fraction form
    169,256.61/253,819.26 = 90,327.78/x
  3. Step 3: Cross multiply
    169,256.61x = 253,819.26 × 90,327.78
  4. Step 4: Simplify right side
    169,256.61x = 22,926,930,277.04
  5. Step 5: Solve for x
    x = 22,926,930,277.04/169,256.61
  6. Step 6: Final answer
    x = 135,456.63

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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.