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Finding the Third Proportional to 77,612 and 165,400

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Solution

The third proportional to 77,612 and 165,400 is: 352,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,612 : 165,400 = 165,400 : x
  2. Step 2: Convert to fraction form
    77,612/165,400 = 165,400/x
  3. Step 3: Cross multiply
    77,612x = 165,400 × 165,400
  4. Step 4: Simplify right side
    77,612x = 27,357,160,000
  5. Step 5: Solve for x
    x = 27,357,160,000/77,612
  6. Step 6: Final answer
    x = 352,486.21

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.