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Finding the Third Proportional to 67,138.50 and 146,265

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Solution

The third proportional to 67,138.50 and 146,265 is: 318,646.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,138.50 : 146,265 = 146,265 : x
  2. Step 2: Convert to fraction form
    67,138.50/146,265 = 146,265/x
  3. Step 3: Cross multiply
    67,138.50x = 146,265 × 146,265
  4. Step 4: Simplify right side
    67,138.50x = 21,393,450,225
  5. Step 5: Solve for x
    x = 21,393,450,225/67,138.50
  6. Step 6: Final answer
    x = 318,646.53

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.