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Finding the Fourth Proportional to 189,672.87, 261,751.32 and 104,791.89

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Solution

The fourth proportional to 189,672.87, 261,751.32 and 104,791.89 is: 144,614.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,672.87 : 261,751.32 = 104,791.89 : x
  2. Step 2: Convert to fraction form
    189,672.87/261,751.32 = 104,791.89/x
  3. Step 3: Cross multiply
    189,672.87x = 261,751.32 × 104,791.89
  4. Step 4: Simplify right side
    189,672.87x = 27,429,415,532.79
  5. Step 5: Solve for x
    x = 27,429,415,532.79/189,672.87
  6. Step 6: Final answer
    x = 144,614.33

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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.