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Finding the Third Proportional to 148,122.75 and 318,724.13

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Solution

The third proportional to 148,122.75 and 318,724.13 is: 685,816.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,122.75 : 318,724.13 = 318,724.13 : x
  2. Step 2: Convert to fraction form
    148,122.75/318,724.13 = 318,724.13/x
  3. Step 3: Cross multiply
    148,122.75x = 318,724.13 × 318,724.13
  4. Step 4: Simplify right side
    148,122.75x = 101,585,067,857.02
  5. Step 5: Solve for x
    x = 101,585,067,857.02/148,122.75
  6. Step 6: Final answer
    x = 685,816.78

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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.