Home / 140,778.40-211,167.60-131,447.20

Finding the Fourth Proportional to 140,778.40, 211,167.60 and 131,447.20

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Solution

The fourth proportional to 140,778.40, 211,167.60 and 131,447.20 is: 197,170.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,778.40 : 211,167.60 = 131,447.20 : x
  2. Step 2: Convert to fraction form
    140,778.40/211,167.60 = 131,447.20/x
  3. Step 3: Cross multiply
    140,778.40x = 211,167.60 × 131,447.20
  4. Step 4: Simplify right side
    140,778.40x = 27,757,389,750.72
  5. Step 5: Solve for x
    x = 27,757,389,750.72/140,778.40
  6. Step 6: Final answer
    x = 197,170.80

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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.