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Finding the Fourth Proportional to 159,987.92, 220,797 and 88,375.76

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Solution

The fourth proportional to 159,987.92, 220,797 and 88,375.76 is: 121,966.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,987.92 : 220,797 = 88,375.76 : x
  2. Step 2: Convert to fraction form
    159,987.92/220,797 = 88,375.76/x
  3. Step 3: Cross multiply
    159,987.92x = 220,797 × 88,375.76
  4. Step 4: Simplify right side
    159,987.92x = 19,513,102,680.72
  5. Step 5: Solve for x
    x = 19,513,102,680.72/159,987.92
  6. Step 6: Final answer
    x = 121,966.10

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1.5x scale

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.