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Finding the Third Proportional to 74,682 and 162,405

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Solution

The third proportional to 74,682 and 162,405 is: 353,169.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,682 : 162,405 = 162,405 : x
  2. Step 2: Convert to fraction form
    74,682/162,405 = 162,405/x
  3. Step 3: Cross multiply
    74,682x = 162,405 × 162,405
  4. Step 4: Simplify right side
    74,682x = 26,375,384,025
  5. Step 5: Solve for x
    x = 26,375,384,025/74,682
  6. Step 6: Final answer
    x = 353,169.22

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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.