Home / 120,499.45-180,513.97-57,229.54

Finding the Fourth Proportional to 120,499.45, 180,513.97 and 57,229.54

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Solution

The fourth proportional to 120,499.45, 180,513.97 and 57,229.54 is: 85,732.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,499.45 : 180,513.97 = 57,229.54 : x
  2. Step 2: Convert to fraction form
    120,499.45/180,513.97 = 57,229.54/x
  3. Step 3: Cross multiply
    120,499.45x = 180,513.97 × 57,229.54
  4. Step 4: Simplify right side
    120,499.45x = 10,330,730,872.32
  5. Step 5: Solve for x
    x = 10,330,730,872.32/120,499.45
  6. Step 6: Final answer
    x = 85,732.60

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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.