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Finding the Third Proportional to 76,722 and 168,611

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Solution

The third proportional to 76,722 and 168,611 is: 370,554.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,722 : 168,611 = 168,611 : x
  2. Step 2: Convert to fraction form
    76,722/168,611 = 168,611/x
  3. Step 3: Cross multiply
    76,722x = 168,611 × 168,611
  4. Step 4: Simplify right side
    76,722x = 28,429,669,321
  5. Step 5: Solve for x
    x = 28,429,669,321/76,722
  6. Step 6: Final answer
    x = 370,554.33

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.