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Finding the Fourth Proportional to 88,661.78, 133,055.04 and 80,191.88

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Solution

The fourth proportional to 88,661.78, 133,055.04 and 80,191.88 is: 120,344.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,661.78 : 133,055.04 = 80,191.88 : x
  2. Step 2: Convert to fraction form
    88,661.78/133,055.04 = 80,191.88/x
  3. Step 3: Cross multiply
    88,661.78x = 133,055.04 × 80,191.88
  4. Step 4: Simplify right side
    88,661.78x = 10,669,933,801.08
  5. Step 5: Solve for x
    x = 10,669,933,801.08/88,661.78
  6. Step 6: Final answer
    x = 120,344.23

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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.