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Finding the Third Proportional to 87,480.56 and 128,427.19

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Solution

The third proportional to 87,480.56 and 128,427.19 is: 188,539.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,480.56 : 128,427.19 = 128,427.19 : x
  2. Step 2: Convert to fraction form
    87,480.56/128,427.19 = 128,427.19/x
  3. Step 3: Cross multiply
    87,480.56x = 128,427.19 × 128,427.19
  4. Step 4: Simplify right side
    87,480.56x = 16,493,542,489.16
  5. Step 5: Solve for x
    x = 16,493,542,489.16/87,480.56
  6. Step 6: Final answer
    x = 188,539.51

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.