Home / 151,680.20-209,286.60-88,009.88

Finding the Fourth Proportional to 151,680.20, 209,286.60 and 88,009.88

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Solution

The fourth proportional to 151,680.20, 209,286.60 and 88,009.88 is: 121,435.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,680.20 : 209,286.60 = 88,009.88 : x
  2. Step 2: Convert to fraction form
    151,680.20/209,286.60 = 88,009.88/x
  3. Step 3: Cross multiply
    151,680.20x = 209,286.60 × 88,009.88
  4. Step 4: Simplify right side
    151,680.20x = 18,419,288,551.61
  5. Step 5: Solve for x
    x = 18,419,288,551.61/151,680.20
  6. Step 6: Final answer
    x = 121,435.02

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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.