Home / 138,806.74-191,553.38-75,144.54

Finding the Fourth Proportional to 138,806.74, 191,553.38 and 75,144.54

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Solution

The fourth proportional to 138,806.74, 191,553.38 and 75,144.54 is: 103,699.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,806.74 : 191,553.38 = 75,144.54 : x
  2. Step 2: Convert to fraction form
    138,806.74/191,553.38 = 75,144.54/x
  3. Step 3: Cross multiply
    138,806.74x = 191,553.38 × 75,144.54
  4. Step 4: Simplify right side
    138,806.74x = 14,394,189,845.05
  5. Step 5: Solve for x
    x = 14,394,189,845.05/138,806.74
  6. Step 6: Final answer
    x = 103,699.50

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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.