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Finding the Third Proportional to 74,668 and 115,589

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Solution

The third proportional to 74,668 and 115,589 is: 178,936.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,668 : 115,589 = 115,589 : x
  2. Step 2: Convert to fraction form
    74,668/115,589 = 115,589/x
  3. Step 3: Cross multiply
    74,668x = 115,589 × 115,589
  4. Step 4: Simplify right side
    74,668x = 13,360,816,921
  5. Step 5: Solve for x
    x = 13,360,816,921/74,668
  6. Step 6: Final answer
    x = 178,936.32

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.