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Finding the Fourth Proportional to 88,659.78, 133,052.04 and 80,189.88

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Solution

The fourth proportional to 88,659.78, 133,052.04 and 80,189.88 is: 120,341.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,659.78 : 133,052.04 = 80,189.88 : x
  2. Step 2: Convert to fraction form
    88,659.78/133,052.04 = 80,189.88/x
  3. Step 3: Cross multiply
    88,659.78x = 133,052.04 × 80,189.88
  4. Step 4: Simplify right side
    88,659.78x = 10,669,427,121.36
  5. Step 5: Solve for x
    x = 10,669,427,121.36/88,659.78
  6. Step 6: Final answer
    x = 120,341.23

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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.