Home / 189,376.11-261,346.77-108,828.90

Finding the Fourth Proportional to 189,376.11, 261,346.77 and 108,828.90

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Solution

The fourth proportional to 189,376.11, 261,346.77 and 108,828.90 is: 150,188.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,376.11 : 261,346.77 = 108,828.90 : x
  2. Step 2: Convert to fraction form
    189,376.11/261,346.77 = 108,828.90/x
  3. Step 3: Cross multiply
    189,376.11x = 261,346.77 × 108,828.90
  4. Step 4: Simplify right side
    189,376.11x = 28,442,081,497.65
  5. Step 5: Solve for x
    x = 28,442,081,497.65/189,376.11
  6. Step 6: Final answer
    x = 150,188.33

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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.