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Finding the Third Proportional to 80,787 and 172,572

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Solution

The third proportional to 80,787 and 172,572 is: 368,637.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,787 : 172,572 = 172,572 : x
  2. Step 2: Convert to fraction form
    80,787/172,572 = 172,572/x
  3. Step 3: Cross multiply
    80,787x = 172,572 × 172,572
  4. Step 4: Simplify right side
    80,787x = 29,781,095,184
  5. Step 5: Solve for x
    x = 29,781,095,184/80,787
  6. Step 6: Final answer
    x = 368,637.22

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.