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Finding the Third Proportional to 79,686 and 174,330

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Solution

The third proportional to 79,686 and 174,330 is: 381,383.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,686 : 174,330 = 174,330 : x
  2. Step 2: Convert to fraction form
    79,686/174,330 = 174,330/x
  3. Step 3: Cross multiply
    79,686x = 174,330 × 174,330
  4. Step 4: Simplify right side
    79,686x = 30,390,948,900
  5. Step 5: Solve for x
    x = 30,390,948,900/79,686
  6. Step 6: Final answer
    x = 381,383.79

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.