Home / 99,912.36-137,874.78-54,589.62

Finding the Fourth Proportional to 99,912.36, 137,874.78 and 54,589.62

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Solution

The fourth proportional to 99,912.36, 137,874.78 and 54,589.62 is: 75,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.36 : 137,874.78 = 54,589.62 : x
  2. Step 2: Convert to fraction form
    99,912.36/137,874.78 = 54,589.62/x
  3. Step 3: Cross multiply
    99,912.36x = 137,874.78 × 54,589.62
  4. Step 4: Simplify right side
    99,912.36x = 7,526,531,847.78
  5. Step 5: Solve for x
    x = 7,526,531,847.78/99,912.36
  6. Step 6: Final answer
    x = 75,331.34

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1.5x scale

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.