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Finding the Third Proportional to 79,020 and 172,242

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Solution

The third proportional to 79,020 and 172,242 is: 375,440.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,020 : 172,242 = 172,242 : x
  2. Step 2: Convert to fraction form
    79,020/172,242 = 172,242/x
  3. Step 3: Cross multiply
    79,020x = 172,242 × 172,242
  4. Step 4: Simplify right side
    79,020x = 29,667,306,564
  5. Step 5: Solve for x
    x = 29,667,306,564/79,020
  6. Step 6: Final answer
    x = 375,440.48

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.