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Finding the Third Proportional to 79,140 and 161,212

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Solution

The third proportional to 79,140 and 161,212 is: 328,396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,140 : 161,212 = 161,212 : x
  2. Step 2: Convert to fraction form
    79,140/161,212 = 161,212/x
  3. Step 3: Cross multiply
    79,140x = 161,212 × 161,212
  4. Step 4: Simplify right side
    79,140x = 25,989,308,944
  5. Step 5: Solve for x
    x = 25,989,308,944/79,140
  6. Step 6: Final answer
    x = 328,396.63

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.