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Finding the Third Proportional to 78,762 and 170,645

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Solution

The third proportional to 78,762 and 170,645 is: 369,717.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762 : 170,645 = 170,645 : x
  2. Step 2: Convert to fraction form
    78,762/170,645 = 170,645/x
  3. Step 3: Cross multiply
    78,762x = 170,645 × 170,645
  4. Step 4: Simplify right side
    78,762x = 29,119,716,025
  5. Step 5: Solve for x
    x = 29,119,716,025/78,762
  6. Step 6: Final answer
    x = 369,717.83

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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.