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Finding the Fourth Proportional to 188,751.69, 260,469.99 and 108,121.86

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Solution

The fourth proportional to 188,751.69, 260,469.99 and 108,121.86 is: 149,203.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,751.69 : 260,469.99 = 108,121.86 : x
  2. Step 2: Convert to fraction form
    188,751.69/260,469.99 = 108,121.86/x
  3. Step 3: Cross multiply
    188,751.69x = 260,469.99 × 108,121.86
  4. Step 4: Simplify right side
    188,751.69x = 28,162,499,792.98
  5. Step 5: Solve for x
    x = 28,162,499,792.98/188,751.69
  6. Step 6: Final answer
    x = 149,203.96

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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.