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Finding the Third Proportional to 80,690 and 125,455

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Solution

The third proportional to 80,690 and 125,455 is: 195,054.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,690 : 125,455 = 125,455 : x
  2. Step 2: Convert to fraction form
    80,690/125,455 = 125,455/x
  3. Step 3: Cross multiply
    80,690x = 125,455 × 125,455
  4. Step 4: Simplify right side
    80,690x = 15,738,957,025
  5. Step 5: Solve for x
    x = 15,738,957,025/80,690
  6. Step 6: Final answer
    x = 195,054.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.