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Finding the Fourth Proportional to 144,383.74, 199,268.07 and 80,725

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Solution

The fourth proportional to 144,383.74, 199,268.07 and 80,725 is: 111,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,383.74 : 199,268.07 = 80,725 : x
  2. Step 2: Convert to fraction form
    144,383.74/199,268.07 = 80,725/x
  3. Step 3: Cross multiply
    144,383.74x = 199,268.07 × 80,725
  4. Step 4: Simplify right side
    144,383.74x = 16,085,914,950.75
  5. Step 5: Solve for x
    x = 16,085,914,950.75/144,383.74
  6. Step 6: Final answer
    x = 111,410.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.