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Finding the Third Proportional to 81,358 and 168,866

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Solution

The third proportional to 81,358 and 168,866 is: 350,496.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,358 : 168,866 = 168,866 : x
  2. Step 2: Convert to fraction form
    81,358/168,866 = 168,866/x
  3. Step 3: Cross multiply
    81,358x = 168,866 × 168,866
  4. Step 4: Simplify right side
    81,358x = 28,515,725,956
  5. Step 5: Solve for x
    x = 28,515,725,956/81,358
  6. Step 6: Final answer
    x = 350,496.89

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.