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Finding the Fourth Proportional to 188,990.82, 260,845.11 and 108,472.77

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Solution

The fourth proportional to 188,990.82, 260,845.11 and 108,472.77 is: 149,714.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,990.82 : 260,845.11 = 108,472.77 : x
  2. Step 2: Convert to fraction form
    188,990.82/260,845.11 = 108,472.77/x
  3. Step 3: Cross multiply
    188,990.82x = 260,845.11 × 108,472.77
  4. Step 4: Simplify right side
    188,990.82x = 28,294,591,622.65
  5. Step 5: Solve for x
    x = 28,294,591,622.65/188,990.82
  6. Step 6: Final answer
    x = 149,714.11

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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.