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Finding the Third Proportional to 79,218 and 172,098

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Solution

The third proportional to 79,218 and 172,098 is: 373,876.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218 : 172,098 = 172,098 : x
  2. Step 2: Convert to fraction form
    79,218/172,098 = 172,098/x
  3. Step 3: Cross multiply
    79,218x = 172,098 × 172,098
  4. Step 4: Simplify right side
    79,218x = 29,617,721,604
  5. Step 5: Solve for x
    x = 29,617,721,604/79,218
  6. Step 6: Final answer
    x = 373,876.16

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.