Home / 90,378.15-135,566.54-27,198

Finding the Fourth Proportional to 90,378.15, 135,566.54 and 27,198

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Solution

The fourth proportional to 90,378.15, 135,566.54 and 27,198 is: 40,796.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,378.15 : 135,566.54 = 27,198 : x
  2. Step 2: Convert to fraction form
    90,378.15/135,566.54 = 27,198/x
  3. Step 3: Cross multiply
    90,378.15x = 135,566.54 × 27,198
  4. Step 4: Simplify right side
    90,378.15x = 3,687,138,822.92
  5. Step 5: Solve for x
    x = 3,687,138,822.92/90,378.15
  6. Step 6: Final answer
    x = 40,796.79

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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.