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Finding the Fourth Proportional to 136,500.80, 204,751.20 and 89,261.60

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Solution

The fourth proportional to 136,500.80, 204,751.20 and 89,261.60 is: 133,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,500.80 : 204,751.20 = 89,261.60 : x
  2. Step 2: Convert to fraction form
    136,500.80/204,751.20 = 89,261.60/x
  3. Step 3: Cross multiply
    136,500.80x = 204,751.20 × 89,261.60
  4. Step 4: Simplify right side
    136,500.80x = 18,276,419,713.92
  5. Step 5: Solve for x
    x = 18,276,419,713.92/136,500.80
  6. Step 6: Final answer
    x = 133,892.40

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1.5x scale

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.