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Finding the Third Proportional to 54,900 and 118,120

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Solution

The third proportional to 54,900 and 118,120 is: 254,140.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,900 : 118,120 = 118,120 : x
  2. Step 2: Convert to fraction form
    54,900/118,120 = 118,120/x
  3. Step 3: Cross multiply
    54,900x = 118,120 × 118,120
  4. Step 4: Simplify right side
    54,900x = 13,952,334,400
  5. Step 5: Solve for x
    x = 13,952,334,400/54,900
  6. Step 6: Final answer
    x = 254,140.88

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.