Home / 69,131.05-103,682.40-19,198.60

Finding the Fourth Proportional to 69,131.05, 103,682.40 and 19,198.60

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Solution

The fourth proportional to 69,131.05, 103,682.40 and 19,198.60 is: 28,793.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,131.05 : 103,682.40 = 19,198.60 : x
  2. Step 2: Convert to fraction form
    69,131.05/103,682.40 = 19,198.60/x
  3. Step 3: Cross multiply
    69,131.05x = 103,682.40 × 19,198.60
  4. Step 4: Simplify right side
    69,131.05x = 1,990,556,924.64
  5. Step 5: Solve for x
    x = 1,990,556,924.64/69,131.05
  6. Step 6: Final answer
    x = 28,793.96

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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.