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Finding the Third Proportional to 78,038 and 168,556

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Solution

The third proportional to 78,038 and 168,556 is: 364,067.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,038 : 168,556 = 168,556 : x
  2. Step 2: Convert to fraction form
    78,038/168,556 = 168,556/x
  3. Step 3: Cross multiply
    78,038x = 168,556 × 168,556
  4. Step 4: Simplify right side
    78,038x = 28,411,125,136
  5. Step 5: Solve for x
    x = 28,411,125,136/78,038
  6. Step 6: Final answer
    x = 364,067.83

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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.