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Finding the Third Proportional to 66,222 and 135,360

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Solution

The third proportional to 66,222 and 135,360 is: 276,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,222 : 135,360 = 135,360 : x
  2. Step 2: Convert to fraction form
    66,222/135,360 = 135,360/x
  3. Step 3: Cross multiply
    66,222x = 135,360 × 135,360
  4. Step 4: Simplify right side
    66,222x = 18,322,329,600
  5. Step 5: Solve for x
    x = 18,322,329,600/66,222
  6. Step 6: Final answer
    x = 276,680.40

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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.