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Finding the Third Proportional to 77,472 and 164,245

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Solution

The third proportional to 77,472 and 164,245 is: 348,208.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,472 : 164,245 = 164,245 : x
  2. Step 2: Convert to fraction form
    77,472/164,245 = 164,245/x
  3. Step 3: Cross multiply
    77,472x = 164,245 × 164,245
  4. Step 4: Simplify right side
    77,472x = 26,976,420,025
  5. Step 5: Solve for x
    x = 26,976,420,025/77,472
  6. Step 6: Final answer
    x = 348,208.64

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.