Home / 140,889.89-211,236.40-52,131.88

Finding the Fourth Proportional to 140,889.89, 211,236.40 and 52,131.88

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Solution

The fourth proportional to 140,889.89, 211,236.40 and 52,131.88 is: 78,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,889.89 : 211,236.40 = 52,131.88 : x
  2. Step 2: Convert to fraction form
    140,889.89/211,236.40 = 52,131.88/x
  3. Step 3: Cross multiply
    140,889.89x = 211,236.40 × 52,131.88
  4. Step 4: Simplify right side
    140,889.89x = 11,012,149,998.01
  5. Step 5: Solve for x
    x = 11,012,149,998.01/140,889.89
  6. Step 6: Final answer
    x = 78,161.39

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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.