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Finding the Fourth Proportional to 135,523.38, 203,170.48 and 85,493.48

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Solution

The fourth proportional to 135,523.38, 203,170.48 and 85,493.48 is: 128,167.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,523.38 : 203,170.48 = 85,493.48 : x
  2. Step 2: Convert to fraction form
    135,523.38/203,170.48 = 85,493.48/x
  3. Step 3: Cross multiply
    135,523.38x = 203,170.48 × 85,493.48
  4. Step 4: Simplify right side
    135,523.38x = 17,369,750,138.88
  5. Step 5: Solve for x
    x = 17,369,750,138.88/135,523.38
  6. Step 6: Final answer
    x = 128,167.92

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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.