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Finding the Fourth Proportional to 186,092.39, 279,138.59 and 80,911.37

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Solution

The fourth proportional to 186,092.39, 279,138.59 and 80,911.37 is: 121,367.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,092.39 : 279,138.59 = 80,911.37 : x
  2. Step 2: Convert to fraction form
    186,092.39/279,138.59 = 80,911.37/x
  3. Step 3: Cross multiply
    186,092.39x = 279,138.59 × 80,911.37
  4. Step 4: Simplify right side
    186,092.39x = 22,585,483,936.52
  5. Step 5: Solve for x
    x = 22,585,483,936.52/186,092.39
  6. Step 6: Final answer
    x = 121,367.05

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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.