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Finding the Fourth Proportional to 188,909, 260,694.42 and 104,025.86

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Solution

The fourth proportional to 188,909, 260,694.42 and 104,025.86 is: 143,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,909 : 260,694.42 = 104,025.86 : x
  2. Step 2: Convert to fraction form
    188,909/260,694.42 = 104,025.86/x
  3. Step 3: Cross multiply
    188,909x = 260,694.42 × 104,025.86
  4. Step 4: Simplify right side
    188,909x = 27,118,961,237.70
  5. Step 5: Solve for x
    x = 27,118,961,237.70/188,909
  6. Step 6: Final answer
    x = 143,555.69

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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.