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Finding the Third Proportional to 51,720 and 107,280

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Solution

The third proportional to 51,720 and 107,280 is: 222,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,720 : 107,280 = 107,280 : x
  2. Step 2: Convert to fraction form
    51,720/107,280 = 107,280/x
  3. Step 3: Cross multiply
    51,720x = 107,280 × 107,280
  4. Step 4: Simplify right side
    51,720x = 11,508,998,400
  5. Step 5: Solve for x
    x = 11,508,998,400/51,720
  6. Step 6: Final answer
    x = 222,525.10

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.