Home / 139,975.38-209,920.05-40,108.77

Finding the Fourth Proportional to 139,975.38, 209,920.05 and 40,108.77

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Solution

The fourth proportional to 139,975.38, 209,920.05 and 40,108.77 is: 60,150.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,975.38 : 209,920.05 = 40,108.77 : x
  2. Step 2: Convert to fraction form
    139,975.38/209,920.05 = 40,108.77/x
  3. Step 3: Cross multiply
    139,975.38x = 209,920.05 × 40,108.77
  4. Step 4: Simplify right side
    139,975.38x = 8,419,635,003.84
  5. Step 5: Solve for x
    x = 8,419,635,003.84/139,975.38
  6. Step 6: Final answer
    x = 60,150.83

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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.