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Finding the Third Proportional to 76,698 and 164,781

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Solution

The third proportional to 76,698 and 164,781 is: 354,021.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,698 : 164,781 = 164,781 : x
  2. Step 2: Convert to fraction form
    76,698/164,781 = 164,781/x
  3. Step 3: Cross multiply
    76,698x = 164,781 × 164,781
  4. Step 4: Simplify right side
    76,698x = 27,152,777,961
  5. Step 5: Solve for x
    x = 27,152,777,961/76,698
  6. Step 6: Final answer
    x = 354,021.98

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.