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Finding the Third Proportional to 71,662.50 and 153,891

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Solution

The third proportional to 71,662.50 and 153,891 is: 330,471.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,662.50 : 153,891 = 153,891 : x
  2. Step 2: Convert to fraction form
    71,662.50/153,891 = 153,891/x
  3. Step 3: Cross multiply
    71,662.50x = 153,891 × 153,891
  4. Step 4: Simplify right side
    71,662.50x = 23,682,439,881
  5. Step 5: Solve for x
    x = 23,682,439,881/71,662.50
  6. Step 6: Final answer
    x = 330,471.86

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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.