Home / 120,180.75-180,257.35-31,442.82

Finding the Fourth Proportional to 120,180.75, 180,257.35 and 31,442.82

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Solution

The fourth proportional to 120,180.75, 180,257.35 and 31,442.82 is: 47,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,180.75 : 180,257.35 = 31,442.82 : x
  2. Step 2: Convert to fraction form
    120,180.75/180,257.35 = 31,442.82/x
  3. Step 3: Cross multiply
    120,180.75x = 180,257.35 × 31,442.82
  4. Step 4: Simplify right side
    120,180.75x = 5,667,799,409.73
  5. Step 5: Solve for x
    x = 5,667,799,409.73/120,180.75
  6. Step 6: Final answer
    x = 47,160.63

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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.