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Finding the Fourth Proportional to 135,842.70, 203,764.05 and 65,729.10

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Solution

The fourth proportional to 135,842.70, 203,764.05 and 65,729.10 is: 98,593.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,842.70 : 203,764.05 = 65,729.10 : x
  2. Step 2: Convert to fraction form
    135,842.70/203,764.05 = 65,729.10/x
  3. Step 3: Cross multiply
    135,842.70x = 203,764.05 × 65,729.10
  4. Step 4: Simplify right side
    135,842.70x = 13,393,227,618.86
  5. Step 5: Solve for x
    x = 13,393,227,618.86/135,842.70
  6. Step 6: Final answer
    x = 98,593.65

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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.