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Finding the Fourth Proportional to 133,604.80, 200,407.20 and 131,531.20

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Solution

The fourth proportional to 133,604.80, 200,407.20 and 131,531.20 is: 197,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,604.80 : 200,407.20 = 131,531.20 : x
  2. Step 2: Convert to fraction form
    133,604.80/200,407.20 = 131,531.20/x
  3. Step 3: Cross multiply
    133,604.80x = 200,407.20 × 131,531.20
  4. Step 4: Simplify right side
    133,604.80x = 26,359,799,504.64
  5. Step 5: Solve for x
    x = 26,359,799,504.64/133,604.80
  6. Step 6: Final answer
    x = 197,296.80

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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.