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Finding the Third Proportional to 71,778 and 157,230

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Solution

The third proportional to 71,778 and 157,230 is: 344,412.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,778 : 157,230 = 157,230 : x
  2. Step 2: Convert to fraction form
    71,778/157,230 = 157,230/x
  3. Step 3: Cross multiply
    71,778x = 157,230 × 157,230
  4. Step 4: Simplify right side
    71,778x = 24,721,272,900
  5. Step 5: Solve for x
    x = 24,721,272,900/71,778
  6. Step 6: Final answer
    x = 344,412.95

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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.