Home / 90,147.82-135,229.02-30,983.54

Finding the Fourth Proportional to 90,147.82, 135,229.02 and 30,983.54

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Solution

The fourth proportional to 90,147.82, 135,229.02 and 30,983.54 is: 46,477.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,147.82 : 135,229.02 = 30,983.54 : x
  2. Step 2: Convert to fraction form
    90,147.82/135,229.02 = 30,983.54/x
  3. Step 3: Cross multiply
    90,147.82x = 135,229.02 × 30,983.54
  4. Step 4: Simplify right side
    90,147.82x = 4,189,873,750.33
  5. Step 5: Solve for x
    x = 4,189,873,750.33/90,147.82
  6. Step 6: Final answer
    x = 46,477.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.