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Finding the Fourth Proportional to 135,120.96, 202,753.71 and 87,724.89

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Solution

The fourth proportional to 135,120.96, 202,753.71 and 87,724.89 is: 131,634.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,120.96 : 202,753.71 = 87,724.89 : x
  2. Step 2: Convert to fraction form
    135,120.96/202,753.71 = 87,724.89/x
  3. Step 3: Cross multiply
    135,120.96x = 202,753.71 × 87,724.89
  4. Step 4: Simplify right side
    135,120.96x = 17,786,546,906.84
  5. Step 5: Solve for x
    x = 17,786,546,906.84/135,120.96
  6. Step 6: Final answer
    x = 131,634.26

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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.