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Finding the Third Proportional to 76,629 and 162,380

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Solution

The third proportional to 76,629 and 162,380 is: 344,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,629 : 162,380 = 162,380 : x
  2. Step 2: Convert to fraction form
    76,629/162,380 = 162,380/x
  3. Step 3: Cross multiply
    76,629x = 162,380 × 162,380
  4. Step 4: Simplify right side
    76,629x = 26,367,264,400
  5. Step 5: Solve for x
    x = 26,367,264,400/76,629
  6. Step 6: Final answer
    x = 344,089.89

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.