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Finding the Fourth Proportional to 167,691, 231,414.48 and 91,210.66

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Solution

The fourth proportional to 167,691, 231,414.48 and 91,210.66 is: 125,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,691 : 231,414.48 = 91,210.66 : x
  2. Step 2: Convert to fraction form
    167,691/231,414.48 = 91,210.66/x
  3. Step 3: Cross multiply
    167,691x = 231,414.48 × 91,210.66
  4. Step 4: Simplify right side
    167,691x = 21,107,467,454.36
  5. Step 5: Solve for x
    x = 21,107,467,454.36/167,691
  6. Step 6: Final answer
    x = 125,871.20

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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.