Home / 208,912.20-313,367.58-51,138.60

Finding the Fourth Proportional to 208,912.20, 313,367.58 and 51,138.60

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Solution

The fourth proportional to 208,912.20, 313,367.58 and 51,138.60 is: 76,707.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,912.20 : 313,367.58 = 51,138.60 : x
  2. Step 2: Convert to fraction form
    208,912.20/313,367.58 = 51,138.60/x
  3. Step 3: Cross multiply
    208,912.20x = 313,367.58 × 51,138.60
  4. Step 4: Simplify right side
    208,912.20x = 16,025,179,326.59
  5. Step 5: Solve for x
    x = 16,025,179,326.59/208,912.20
  6. Step 6: Final answer
    x = 76,707.72

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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.