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Finding the Third Proportional to 71,636 and 168,506

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Solution

The third proportional to 71,636 and 168,506 is: 396,368.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,636 : 168,506 = 168,506 : x
  2. Step 2: Convert to fraction form
    71,636/168,506 = 168,506/x
  3. Step 3: Cross multiply
    71,636x = 168,506 × 168,506
  4. Step 4: Simplify right side
    71,636x = 28,394,272,036
  5. Step 5: Solve for x
    x = 28,394,272,036/71,636
  6. Step 6: Final answer
    x = 396,368.75

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.