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Finding the Third Proportional to 87,714 and 128,290.25

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Solution

The third proportional to 87,714 and 128,290.25 is: 187,636.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,714 : 128,290.25 = 128,290.25 : x
  2. Step 2: Convert to fraction form
    87,714/128,290.25 = 128,290.25/x
  3. Step 3: Cross multiply
    87,714x = 128,290.25 × 128,290.25
  4. Step 4: Simplify right side
    87,714x = 16,458,388,245.06
  5. Step 5: Solve for x
    x = 16,458,388,245.06/87,714
  6. Step 6: Final answer
    x = 187,636.96

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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.