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Finding the Third Proportional to 77,310 and 162,918

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Solution

The third proportional to 77,310 and 162,918 is: 343,322.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,310 : 162,918 = 162,918 : x
  2. Step 2: Convert to fraction form
    77,310/162,918 = 162,918/x
  3. Step 3: Cross multiply
    77,310x = 162,918 × 162,918
  4. Step 4: Simplify right side
    77,310x = 26,542,274,724
  5. Step 5: Solve for x
    x = 26,542,274,724/77,310
  6. Step 6: Final answer
    x = 343,322.66

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.