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Finding the Third Proportional to 61,618 and 126,156

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Solution

The third proportional to 61,618 and 126,156 is: 258,290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,618 : 126,156 = 126,156 : x
  2. Step 2: Convert to fraction form
    61,618/126,156 = 126,156/x
  3. Step 3: Cross multiply
    61,618x = 126,156 × 126,156
  4. Step 4: Simplify right side
    61,618x = 15,915,336,336
  5. Step 5: Solve for x
    x = 15,915,336,336/61,618
  6. Step 6: Final answer
    x = 258,290.38

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.