Home / 139,743.20-209,625.12-39,911.84

Finding the Fourth Proportional to 139,743.20, 209,625.12 and 39,911.84

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Solution

The fourth proportional to 139,743.20, 209,625.12 and 39,911.84 is: 59,870.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,743.20 : 209,625.12 = 39,911.84 : x
  2. Step 2: Convert to fraction form
    139,743.20/209,625.12 = 39,911.84/x
  3. Step 3: Cross multiply
    139,743.20x = 209,625.12 × 39,911.84
  4. Step 4: Simplify right side
    139,743.20x = 8,366,524,249.42
  5. Step 5: Solve for x
    x = 8,366,524,249.42/139,743.20
  6. Step 6: Final answer
    x = 59,870.71

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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.