Home / 189,532.78-261,555.08-108,976.05

Finding the Fourth Proportional to 189,532.78, 261,555.08 and 108,976.05

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Solution

The fourth proportional to 189,532.78, 261,555.08 and 108,976.05 is: 150,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,532.78 : 261,555.08 = 108,976.05 : x
  2. Step 2: Convert to fraction form
    189,532.78/261,555.08 = 108,976.05/x
  3. Step 3: Cross multiply
    189,532.78x = 261,555.08 × 108,976.05
  4. Step 4: Simplify right side
    189,532.78x = 28,503,238,930.95
  5. Step 5: Solve for x
    x = 28,503,238,930.95/189,532.78
  6. Step 6: Final answer
    x = 150,386.86

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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.