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Finding the Third Proportional to 77,698 and 166,724

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Solution

The third proportional to 77,698 and 166,724 is: 357,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,698 : 166,724 = 166,724 : x
  2. Step 2: Convert to fraction form
    77,698/166,724 = 166,724/x
  3. Step 3: Cross multiply
    77,698x = 166,724 × 166,724
  4. Step 4: Simplify right side
    77,698x = 27,796,892,176
  5. Step 5: Solve for x
    x = 27,796,892,176/77,698
  6. Step 6: Final answer
    x = 357,755.57

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.