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Finding the Third Proportional to 170,139.23 and 261,156.66

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Solution

The third proportional to 170,139.23 and 261,156.66 is: 400,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,139.23 : 261,156.66 = 261,156.66 : x
  2. Step 2: Convert to fraction form
    170,139.23/261,156.66 = 261,156.66/x
  3. Step 3: Cross multiply
    170,139.23x = 261,156.66 × 261,156.66
  4. Step 4: Simplify right side
    170,139.23x = 68,202,799,103.68
  5. Step 5: Solve for x
    x = 68,202,799,103.68/170,139.23
  6. Step 6: Final answer
    x = 400,864.62

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.