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Finding the Fourth Proportional to 163,314.20, 225,373.92 and 91,694

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Solution

The fourth proportional to 163,314.20, 225,373.92 and 91,694 is: 126,537.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,314.20 : 225,373.92 = 91,694 : x
  2. Step 2: Convert to fraction form
    163,314.20/225,373.92 = 91,694/x
  3. Step 3: Cross multiply
    163,314.20x = 225,373.92 × 91,694
  4. Step 4: Simplify right side
    163,314.20x = 20,665,436,220.48
  5. Step 5: Solve for x
    x = 20,665,436,220.48/163,314.20
  6. Step 6: Final answer
    x = 126,537.90

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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.