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Finding the Fourth Proportional to 157,251.30, 235,416.15 and 138,819.30

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Solution

The fourth proportional to 157,251.30, 235,416.15 and 138,819.30 is: 207,822.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,251.30 : 235,416.15 = 138,819.30 : x
  2. Step 2: Convert to fraction form
    157,251.30/235,416.15 = 138,819.30/x
  3. Step 3: Cross multiply
    157,251.30x = 235,416.15 × 138,819.30
  4. Step 4: Simplify right side
    157,251.30x = 32,680,305,151.70
  5. Step 5: Solve for x
    x = 32,680,305,151.70/157,251.30
  6. Step 6: Final answer
    x = 207,822.16

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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.