Home / 111,768.06-154,232.19-66,443.70

Finding the Fourth Proportional to 111,768.06, 154,232.19 and 66,443.70

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Solution

The fourth proportional to 111,768.06, 154,232.19 and 66,443.70 is: 91,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,768.06 : 154,232.19 = 66,443.70 : x
  2. Step 2: Convert to fraction form
    111,768.06/154,232.19 = 66,443.70/x
  3. Step 3: Cross multiply
    111,768.06x = 154,232.19 × 66,443.70
  4. Step 4: Simplify right side
    111,768.06x = 10,247,757,362.70
  5. Step 5: Solve for x
    x = 10,247,757,362.70/111,768.06
  6. Step 6: Final answer
    x = 91,687.71

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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.