Home / 208,976.85-288,433.98-137,363.54

Finding the Fourth Proportional to 208,976.85, 288,433.98 and 137,363.54

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Solution

The fourth proportional to 208,976.85, 288,433.98 and 137,363.54 is: 189,591.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,976.85 : 288,433.98 = 137,363.54 : x
  2. Step 2: Convert to fraction form
    208,976.85/288,433.98 = 137,363.54/x
  3. Step 3: Cross multiply
    208,976.85x = 288,433.98 × 137,363.54
  4. Step 4: Simplify right side
    208,976.85x = 39,620,311,106.92
  5. Step 5: Solve for x
    x = 39,620,311,106.92/208,976.85
  6. Step 6: Final answer
    x = 189,591.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.