Home / 154,380.20-213,086.58-90,738.44

Finding the Fourth Proportional to 154,380.20, 213,086.58 and 90,738.44

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Solution

The fourth proportional to 154,380.20, 213,086.58 and 90,738.44 is: 125,243.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,380.20 : 213,086.58 = 90,738.44 : x
  2. Step 2: Convert to fraction form
    154,380.20/213,086.58 = 90,738.44/x
  3. Step 3: Cross multiply
    154,380.20x = 213,086.58 × 90,738.44
  4. Step 4: Simplify right side
    154,380.20x = 19,335,143,854.14
  5. Step 5: Solve for x
    x = 19,335,143,854.14/154,380.20
  6. Step 6: Final answer
    x = 125,243.68

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1.5x scale

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.