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Finding the Fourth Proportional to 142,471.20, 196,612.20 and 88,777.92

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Solution

The fourth proportional to 142,471.20, 196,612.20 and 88,777.92 is: 122,514.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,471.20 : 196,612.20 = 88,777.92 : x
  2. Step 2: Convert to fraction form
    142,471.20/196,612.20 = 88,777.92/x
  3. Step 3: Cross multiply
    142,471.20x = 196,612.20 × 88,777.92
  4. Step 4: Simplify right side
    142,471.20x = 17,454,822,162.62
  5. Step 5: Solve for x
    x = 17,454,822,162.62/142,471.20
  6. Step 6: Final answer
    x = 122,514.74

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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.