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Finding the Third Proportional to 77,867.50 and 167,581

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Solution

The third proportional to 77,867.50 and 167,581 is: 360,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,867.50 : 167,581 = 167,581 : x
  2. Step 2: Convert to fraction form
    77,867.50/167,581 = 167,581/x
  3. Step 3: Cross multiply
    77,867.50x = 167,581 × 167,581
  4. Step 4: Simplify right side
    77,867.50x = 28,083,391,561
  5. Step 5: Solve for x
    x = 28,083,391,561/77,867.50
  6. Step 6: Final answer
    x = 360,656.13

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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.