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Finding the Third Proportional to 78,668 and 195,696

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Solution

The third proportional to 78,668 and 195,696 is: 486,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668 : 195,696 = 195,696 : x
  2. Step 2: Convert to fraction form
    78,668/195,696 = 195,696/x
  3. Step 3: Cross multiply
    78,668x = 195,696 × 195,696
  4. Step 4: Simplify right side
    78,668x = 38,296,924,416
  5. Step 5: Solve for x
    x = 38,296,924,416/78,668
  6. Step 6: Final answer
    x = 486,817.06

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Why These Related Problems?

These problems maintain the same ratio (2.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.