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Finding the Third Proportional to 18,155 and 40,198

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Solution

The third proportional to 18,155 and 40,198 is: 89,004.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155 : 40,198 = 40,198 : x
  2. Step 2: Convert to fraction form
    18,155/40,198 = 40,198/x
  3. Step 3: Cross multiply
    18,155x = 40,198 × 40,198
  4. Step 4: Simplify right side
    18,155x = 1,615,879,204
  5. Step 5: Solve for x
    x = 1,615,879,204/18,155
  6. Step 6: Final answer
    x = 89,004.64

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.