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Finding the Fourth Proportional to 189,791.65, 261,902.24 and 104,903.65

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Solution

The fourth proportional to 189,791.65, 261,902.24 and 104,903.65 is: 144,761.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,791.65 : 261,902.24 = 104,903.65 : x
  2. Step 2: Convert to fraction form
    189,791.65/261,902.24 = 104,903.65/x
  3. Step 3: Cross multiply
    189,791.65x = 261,902.24 × 104,903.65
  4. Step 4: Simplify right side
    189,791.65x = 27,474,499,609.66
  5. Step 5: Solve for x
    x = 27,474,499,609.66/189,791.65
  6. Step 6: Final answer
    x = 144,761.38

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1.5x scale

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.