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Finding the Third Proportional to 69,042 and 148,980

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Solution

The third proportional to 69,042 and 148,980 is: 321,471.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,042 : 148,980 = 148,980 : x
  2. Step 2: Convert to fraction form
    69,042/148,980 = 148,980/x
  3. Step 3: Cross multiply
    69,042x = 148,980 × 148,980
  4. Step 4: Simplify right side
    69,042x = 22,195,040,400
  5. Step 5: Solve for x
    x = 22,195,040,400/69,042
  6. Step 6: Final answer
    x = 321,471.57

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.