Home / 154,631.94-213,821.55-122,745.48

Finding the Fourth Proportional to 154,631.94, 213,821.55 and 122,745.48

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Solution

The fourth proportional to 154,631.94, 213,821.55 and 122,745.48 is: 169,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,631.94 : 213,821.55 = 122,745.48 : x
  2. Step 2: Convert to fraction form
    154,631.94/213,821.55 = 122,745.48/x
  3. Step 3: Cross multiply
    154,631.94x = 213,821.55 × 122,745.48
  4. Step 4: Simplify right side
    154,631.94x = 26,245,628,789.09
  5. Step 5: Solve for x
    x = 26,245,628,789.09/154,631.94
  6. Step 6: Final answer
    x = 169,729.67

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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.