Home / 99,912.02-137,876.96-54,589.03

Finding the Fourth Proportional to 99,912.02, 137,876.96 and 54,589.03

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Solution

The fourth proportional to 99,912.02, 137,876.96 and 54,589.03 is: 75,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,912.02 : 137,876.96 = 54,589.03 : x
  2. Step 2: Convert to fraction form
    99,912.02/137,876.96 = 54,589.03/x
  3. Step 3: Cross multiply
    99,912.02x = 137,876.96 × 54,589.03
  4. Step 4: Simplify right side
    99,912.02x = 7,526,569,297.53
  5. Step 5: Solve for x
    x = 7,526,569,297.53/99,912.02
  6. Step 6: Final answer
    x = 75,331.97

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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.