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Finding the Third Proportional to 79,948 and 173,720

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Solution

The third proportional to 79,948 and 173,720 is: 377,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,948 : 173,720 = 173,720 : x
  2. Step 2: Convert to fraction form
    79,948/173,720 = 173,720/x
  3. Step 3: Cross multiply
    79,948x = 173,720 × 173,720
  4. Step 4: Simplify right side
    79,948x = 30,178,638,400
  5. Step 5: Solve for x
    x = 30,178,638,400/79,948
  6. Step 6: Final answer
    x = 377,478.34

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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.