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Finding the Third Proportional to 66,721.50 and 146,563.50

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Solution

The third proportional to 66,721.50 and 146,563.50 is: 321,948.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,721.50 : 146,563.50 = 146,563.50 : x
  2. Step 2: Convert to fraction form
    66,721.50/146,563.50 = 146,563.50/x
  3. Step 3: Cross multiply
    66,721.50x = 146,563.50 × 146,563.50
  4. Step 4: Simplify right side
    66,721.50x = 21,480,859,532.25
  5. Step 5: Solve for x
    x = 21,480,859,532.25/66,721.50
  6. Step 6: Final answer
    x = 321,948.09

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.