Home / 189,290.40-261,135.36-108,697.92

Finding the Fourth Proportional to 189,290.40, 261,135.36 and 108,697.92

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Solution

The fourth proportional to 189,290.40, 261,135.36 and 108,697.92 is: 149,954.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,290.40 : 261,135.36 = 108,697.92 : x
  2. Step 2: Convert to fraction form
    189,290.40/261,135.36 = 108,697.92/x
  3. Step 3: Cross multiply
    189,290.40x = 261,135.36 × 108,697.92
  4. Step 4: Simplify right side
    189,290.40x = 28,384,870,470.45
  5. Step 5: Solve for x
    x = 28,384,870,470.45/189,290.40
  6. Step 6: Final answer
    x = 149,954.09

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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.