Home / 208,119.75-312,228.83-67,878.38

Finding the Fourth Proportional to 208,119.75, 312,228.83 and 67,878.38

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Solution

The fourth proportional to 208,119.75, 312,228.83 and 67,878.38 is: 101,833.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,119.75 : 312,228.83 = 67,878.38 : x
  2. Step 2: Convert to fraction form
    208,119.75/312,228.83 = 67,878.38/x
  3. Step 3: Cross multiply
    208,119.75x = 312,228.83 × 67,878.38
  4. Step 4: Simplify right side
    208,119.75x = 21,193,585,778.25
  5. Step 5: Solve for x
    x = 21,193,585,778.25/208,119.75
  6. Step 6: Final answer
    x = 101,833.61

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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.