Home / 188,634.22-260,183.41-128,099.78

Finding the Fourth Proportional to 188,634.22, 260,183.41 and 128,099.78

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Solution

The fourth proportional to 188,634.22, 260,183.41 and 128,099.78 is: 176,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,634.22 : 260,183.41 = 128,099.78 : x
  2. Step 2: Convert to fraction form
    188,634.22/260,183.41 = 128,099.78/x
  3. Step 3: Cross multiply
    188,634.22x = 260,183.41 × 128,099.78
  4. Step 4: Simplify right side
    188,634.22x = 33,329,436,935.17
  5. Step 5: Solve for x
    x = 33,329,436,935.17/188,634.22
  6. Step 6: Final answer
    x = 176,688.18

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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.