Home / 205,212.26-307,850.80-78,847.46

Finding the Fourth Proportional to 205,212.26, 307,850.80 and 78,847.46

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Solution

The fourth proportional to 205,212.26, 307,850.80 and 78,847.46 is: 118,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,212.26 : 307,850.80 = 78,847.46 : x
  2. Step 2: Convert to fraction form
    205,212.26/307,850.80 = 78,847.46/x
  3. Step 3: Cross multiply
    205,212.26x = 307,850.80 × 78,847.46
  4. Step 4: Simplify right side
    205,212.26x = 24,273,253,638.97
  5. Step 5: Solve for x
    x = 24,273,253,638.97/205,212.26
  6. Step 6: Final answer
    x = 118,283.64

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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.