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Finding the Third Proportional to 87,746.25 and 128,328.75

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Solution

The third proportional to 87,746.25 and 128,328.75 is: 187,680.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,746.25 : 128,328.75 = 128,328.75 : x
  2. Step 2: Convert to fraction form
    87,746.25/128,328.75 = 128,328.75/x
  3. Step 3: Cross multiply
    87,746.25x = 128,328.75 × 128,328.75
  4. Step 4: Simplify right side
    87,746.25x = 16,468,268,076.56
  5. Step 5: Solve for x
    x = 16,468,268,076.56/87,746.25
  6. Step 6: Final answer
    x = 187,680.59

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.