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Finding the Third Proportional to 76,912 and 163,651

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Solution

The third proportional to 76,912 and 163,651 is: 348,211.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,912 : 163,651 = 163,651 : x
  2. Step 2: Convert to fraction form
    76,912/163,651 = 163,651/x
  3. Step 3: Cross multiply
    76,912x = 163,651 × 163,651
  4. Step 4: Simplify right side
    76,912x = 26,781,649,801
  5. Step 5: Solve for x
    x = 26,781,649,801/76,912
  6. Step 6: Final answer
    x = 348,211.59

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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.