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Finding the Fourth Proportional to 186,213.49, 279,458.81 and 91,494.52

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Solution

The fourth proportional to 186,213.49, 279,458.81 and 91,494.52 is: 137,309.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,213.49 : 279,458.81 = 91,494.52 : x
  2. Step 2: Convert to fraction form
    186,213.49/279,458.81 = 91,494.52/x
  3. Step 3: Cross multiply
    186,213.49x = 279,458.81 × 91,494.52
  4. Step 4: Simplify right side
    186,213.49x = 25,568,949,680.72
  5. Step 5: Solve for x
    x = 25,568,949,680.72/186,213.49
  6. Step 6: Final answer
    x = 137,309.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.