Home / 158,174.38-218,286.12-90,201.61

Finding the Fourth Proportional to 158,174.38, 218,286.12 and 90,201.61

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Solution

The fourth proportional to 158,174.38, 218,286.12 and 90,201.61 is: 124,481.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,174.38 : 218,286.12 = 90,201.61 : x
  2. Step 2: Convert to fraction form
    158,174.38/218,286.12 = 90,201.61/x
  3. Step 3: Cross multiply
    158,174.38x = 218,286.12 × 90,201.61
  4. Step 4: Simplify right side
    158,174.38x = 19,689,759,464.65
  5. Step 5: Solve for x
    x = 19,689,759,464.65/158,174.38
  6. Step 6: Final answer
    x = 124,481.34

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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.