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Finding the Third Proportional to 74,636 and 162,400

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Solution

The third proportional to 74,636 and 162,400 is: 353,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,636 : 162,400 = 162,400 : x
  2. Step 2: Convert to fraction form
    74,636/162,400 = 162,400/x
  3. Step 3: Cross multiply
    74,636x = 162,400 × 162,400
  4. Step 4: Simplify right side
    74,636x = 26,373,760,000
  5. Step 5: Solve for x
    x = 26,373,760,000/74,636
  6. Step 6: Final answer
    x = 353,365.13

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.