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Finding the Third Proportional to 77,998.50 and 159,685.50

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Solution

The third proportional to 77,998.50 and 159,685.50 is: 326,922.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,998.50 : 159,685.50 = 159,685.50 : x
  2. Step 2: Convert to fraction form
    77,998.50/159,685.50 = 159,685.50/x
  3. Step 3: Cross multiply
    77,998.50x = 159,685.50 × 159,685.50
  4. Step 4: Simplify right side
    77,998.50x = 25,499,458,910.25
  5. Step 5: Solve for x
    x = 25,499,458,910.25/77,998.50
  6. Step 6: Final answer
    x = 326,922.43

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.