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Finding the Third Proportional to 79,990 and 173,228

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Solution

The third proportional to 79,990 and 173,228 is: 375,146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,990 : 173,228 = 173,228 : x
  2. Step 2: Convert to fraction form
    79,990/173,228 = 173,228/x
  3. Step 3: Cross multiply
    79,990x = 173,228 × 173,228
  4. Step 4: Simplify right side
    79,990x = 30,007,939,984
  5. Step 5: Solve for x
    x = 30,007,939,984/79,990
  6. Step 6: Final answer
    x = 375,146.14

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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.