Home / 120,540.22-180,789.67-31,794.60

Finding the Fourth Proportional to 120,540.22, 180,789.67 and 31,794.60

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Solution

The fourth proportional to 120,540.22, 180,789.67 and 31,794.60 is: 47,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,540.22 : 180,789.67 = 31,794.60 : x
  2. Step 2: Convert to fraction form
    120,540.22/180,789.67 = 31,794.60/x
  3. Step 3: Cross multiply
    120,540.22x = 180,789.67 × 31,794.60
  4. Step 4: Simplify right side
    120,540.22x = 5,748,135,241.78
  5. Step 5: Solve for x
    x = 5,748,135,241.78/120,540.22
  6. Step 6: Final answer
    x = 47,686.45

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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.