Home / 189,279.19-261,204.78-108,711.93

Finding the Fourth Proportional to 189,279.19, 261,204.78 and 108,711.93

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Solution

The fourth proportional to 189,279.19, 261,204.78 and 108,711.93 is: 150,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,279.19 : 261,204.78 = 108,711.93 : x
  2. Step 2: Convert to fraction form
    189,279.19/261,204.78 = 108,711.93/x
  3. Step 3: Cross multiply
    189,279.19x = 261,204.78 × 108,711.93
  4. Step 4: Simplify right side
    189,279.19x = 28,396,075,759.03
  5. Step 5: Solve for x
    x = 28,396,075,759.03/189,279.19
  6. Step 6: Final answer
    x = 150,022.17

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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.