Home / 120,558.28-180,724.27-40,540.29

Finding the Fourth Proportional to 120,558.28, 180,724.27 and 40,540.29

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Solution

The fourth proportional to 120,558.28, 180,724.27 and 40,540.29 is: 60,772.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,558.28 : 180,724.27 = 40,540.29 : x
  2. Step 2: Convert to fraction form
    120,558.28/180,724.27 = 40,540.29/x
  3. Step 3: Cross multiply
    120,558.28x = 180,724.27 × 40,540.29
  4. Step 4: Simplify right side
    120,558.28x = 7,326,614,007.05
  5. Step 5: Solve for x
    x = 7,326,614,007.05/120,558.28
  6. Step 6: Final answer
    x = 60,772.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.