Home / 111,767.06-154,230.81-66,442.70

Finding the Fourth Proportional to 111,767.06, 154,230.81 and 66,442.70

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Solution

The fourth proportional to 111,767.06, 154,230.81 and 66,442.70 is: 91,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,767.06 : 154,230.81 = 66,442.70 : x
  2. Step 2: Convert to fraction form
    111,767.06/154,230.81 = 66,442.70/x
  3. Step 3: Cross multiply
    111,767.06x = 154,230.81 × 66,442.70
  4. Step 4: Simplify right side
    111,767.06x = 10,247,511,439.59
  5. Step 5: Solve for x
    x = 10,247,511,439.59/111,767.06
  6. Step 6: Final answer
    x = 91,686.33

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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.