Home / 205,211.76-307,850.04-78,846.96

Finding the Fourth Proportional to 205,211.76, 307,850.04 and 78,846.96

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Solution

The fourth proportional to 205,211.76, 307,850.04 and 78,846.96 is: 118,282.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,211.76 : 307,850.04 = 78,846.96 : x
  2. Step 2: Convert to fraction form
    205,211.76/307,850.04 = 78,846.96/x
  3. Step 3: Cross multiply
    205,211.76x = 307,850.04 × 78,846.96
  4. Step 4: Simplify right side
    205,211.76x = 24,273,039,789.88
  5. Step 5: Solve for x
    x = 24,273,039,789.88/205,211.76
  6. Step 6: Final answer
    x = 118,282.89

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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.