Home / 100,110.48-138,150.61-54,787.54

Finding the Fourth Proportional to 100,110.48, 138,150.61 and 54,787.54

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Solution

The fourth proportional to 100,110.48, 138,150.61 and 54,787.54 is: 75,605.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,110.48 : 138,150.61 = 54,787.54 : x
  2. Step 2: Convert to fraction form
    100,110.48/138,150.61 = 54,787.54/x
  3. Step 3: Cross multiply
    100,110.48x = 138,150.61 × 54,787.54
  4. Step 4: Simplify right side
    100,110.48x = 7,568,931,589.05
  5. Step 5: Solve for x
    x = 7,568,931,589.05/100,110.48
  6. Step 6: Final answer
    x = 75,605.79

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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.