Home / 189,836.26-261,979.50-104,958.78

Finding the Fourth Proportional to 189,836.26, 261,979.50 and 104,958.78

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Solution

The fourth proportional to 189,836.26, 261,979.50 and 104,958.78 is: 144,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,836.26 : 261,979.50 = 104,958.78 : x
  2. Step 2: Convert to fraction form
    189,836.26/261,979.50 = 104,958.78/x
  3. Step 3: Cross multiply
    189,836.26x = 261,979.50 × 104,958.78
  4. Step 4: Simplify right side
    189,836.26x = 27,497,048,705.01
  5. Step 5: Solve for x
    x = 27,497,048,705.01/189,836.26
  6. Step 6: Final answer
    x = 144,846.14

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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.