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Finding the Fourth Proportional to 189,112.68, 260,976.71 and 104,229.74

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Solution

The fourth proportional to 189,112.68, 260,976.71 and 104,229.74 is: 143,837.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,112.68 : 260,976.71 = 104,229.74 : x
  2. Step 2: Convert to fraction form
    189,112.68/260,976.71 = 104,229.74/x
  3. Step 3: Cross multiply
    189,112.68x = 260,976.71 × 104,229.74
  4. Step 4: Simplify right side
    189,112.68x = 27,201,535,542.37
  5. Step 5: Solve for x
    x = 27,201,535,542.37/189,112.68
  6. Step 6: Final answer
    x = 143,837.71

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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.