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Finding the Third Proportional to 112,689 and 168,680

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Solution

The third proportional to 112,689 and 168,680 is: 252,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,689 : 168,680 = 168,680 : x
  2. Step 2: Convert to fraction form
    112,689/168,680 = 168,680/x
  3. Step 3: Cross multiply
    112,689x = 168,680 × 168,680
  4. Step 4: Simplify right side
    112,689x = 28,452,942,400
  5. Step 5: Solve for x
    x = 28,452,942,400/112,689
  6. Step 6: Final answer
    x = 252,490.86

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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.