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Finding the Third Proportional to 90,175.50 and 140,721.75

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Solution

The third proportional to 90,175.50 and 140,721.75 is: 219,600.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,175.50 : 140,721.75 = 140,721.75 : x
  2. Step 2: Convert to fraction form
    90,175.50/140,721.75 = 140,721.75/x
  3. Step 3: Cross multiply
    90,175.50x = 140,721.75 × 140,721.75
  4. Step 4: Simplify right side
    90,175.50x = 19,802,610,923.06
  5. Step 5: Solve for x
    x = 19,802,610,923.06/90,175.50
  6. Step 6: Final answer
    x = 219,600.79

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.