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Finding the Third Proportional to 75,890 and 166,540

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Solution

The third proportional to 75,890 and 166,540 is: 365,470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,890 : 166,540 = 166,540 : x
  2. Step 2: Convert to fraction form
    75,890/166,540 = 166,540/x
  3. Step 3: Cross multiply
    75,890x = 166,540 × 166,540
  4. Step 4: Simplify right side
    75,890x = 27,735,571,600
  5. Step 5: Solve for x
    x = 27,735,571,600/75,890
  6. Step 6: Final answer
    x = 365,470.70

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.