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Finding the Third Proportional to 40,101 and 87,129

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Solution

The third proportional to 40,101 and 87,129 is: 189,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,101 : 87,129 = 87,129 : x
  2. Step 2: Convert to fraction form
    40,101/87,129 = 87,129/x
  3. Step 3: Cross multiply
    40,101x = 87,129 × 87,129
  4. Step 4: Simplify right side
    40,101x = 7,591,462,641
  5. Step 5: Solve for x
    x = 7,591,462,641/40,101
  6. Step 6: Final answer
    x = 189,308.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.