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Finding the Fourth Proportional to 167,770.78, 231,520.74 and 91,287.29

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Solution

The fourth proportional to 167,770.78, 231,520.74 and 91,287.29 is: 125,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,770.78 : 231,520.74 = 91,287.29 : x
  2. Step 2: Convert to fraction form
    167,770.78/231,520.74 = 91,287.29/x
  3. Step 3: Cross multiply
    167,770.78x = 231,520.74 × 91,287.29
  4. Step 4: Simplify right side
    167,770.78x = 21,134,900,933.39
  5. Step 5: Solve for x
    x = 21,134,900,933.39/167,770.78
  6. Step 6: Final answer
    x = 125,974.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.