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Finding the Fourth Proportional to 133,480.80, 200,221.20 and 80,863.20

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Solution

The fourth proportional to 133,480.80, 200,221.20 and 80,863.20 is: 121,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,480.80 : 200,221.20 = 80,863.20 : x
  2. Step 2: Convert to fraction form
    133,480.80/200,221.20 = 80,863.20/x
  3. Step 3: Cross multiply
    133,480.80x = 200,221.20 × 80,863.20
  4. Step 4: Simplify right side
    133,480.80x = 16,190,526,939.84
  5. Step 5: Solve for x
    x = 16,190,526,939.84/133,480.80
  6. Step 6: Final answer
    x = 121,294.80

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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.