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Finding the Third Proportional to 54,128.25 and 120,558.38

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Solution

The third proportional to 54,128.25 and 120,558.38 is: 268,516.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,128.25 : 120,558.38 = 120,558.38 : x
  2. Step 2: Convert to fraction form
    54,128.25/120,558.38 = 120,558.38/x
  3. Step 3: Cross multiply
    54,128.25x = 120,558.38 × 120,558.38
  4. Step 4: Simplify right side
    54,128.25x = 14,534,321,782.64
  5. Step 5: Solve for x
    x = 14,534,321,782.64/54,128.25
  6. Step 6: Final answer
    x = 268,516.38

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.