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Finding the Third Proportional to 86,686 and 187,330

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Solution

The third proportional to 86,686 and 187,330 is: 404,823.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,686 : 187,330 = 187,330 : x
  2. Step 2: Convert to fraction form
    86,686/187,330 = 187,330/x
  3. Step 3: Cross multiply
    86,686x = 187,330 × 187,330
  4. Step 4: Simplify right side
    86,686x = 35,092,528,900
  5. Step 5: Solve for x
    x = 35,092,528,900/86,686
  6. Step 6: Final answer
    x = 404,823.49

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.