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Finding the Third Proportional to 63,120 and 136,080

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Solution

The third proportional to 63,120 and 136,080 is: 293,373.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,120 : 136,080 = 136,080 : x
  2. Step 2: Convert to fraction form
    63,120/136,080 = 136,080/x
  3. Step 3: Cross multiply
    63,120x = 136,080 × 136,080
  4. Step 4: Simplify right side
    63,120x = 18,517,766,400
  5. Step 5: Solve for x
    x = 18,517,766,400/63,120
  6. Step 6: Final answer
    x = 293,373.99

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.