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Finding the Third Proportional to 83,800 and 180,721

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Solution

The third proportional to 83,800 and 180,721 is: 389,738.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,800 : 180,721 = 180,721 : x
  2. Step 2: Convert to fraction form
    83,800/180,721 = 180,721/x
  3. Step 3: Cross multiply
    83,800x = 180,721 × 180,721
  4. Step 4: Simplify right side
    83,800x = 32,660,079,841
  5. Step 5: Solve for x
    x = 32,660,079,841/83,800
  6. Step 6: Final answer
    x = 389,738.42

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.