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Finding the Third Proportional to 77,770 and 170,147

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Solution

The third proportional to 77,770 and 170,147 is: 372,251.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,770 : 170,147 = 170,147 : x
  2. Step 2: Convert to fraction form
    77,770/170,147 = 170,147/x
  3. Step 3: Cross multiply
    77,770x = 170,147 × 170,147
  4. Step 4: Simplify right side
    77,770x = 28,950,001,609
  5. Step 5: Solve for x
    x = 28,950,001,609/77,770
  6. Step 6: Final answer
    x = 372,251.53

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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.