Home / 90,233.15-135,273.61-56,879.69

Finding the Fourth Proportional to 90,233.15, 135,273.61 and 56,879.69

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Solution

The fourth proportional to 90,233.15, 135,273.61 and 56,879.69 is: 85,271.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,233.15 : 135,273.61 = 56,879.69 : x
  2. Step 2: Convert to fraction form
    90,233.15/135,273.61 = 56,879.69/x
  3. Step 3: Cross multiply
    90,233.15x = 135,273.61 × 56,879.69
  4. Step 4: Simplify right side
    90,233.15x = 7,694,320,183.41
  5. Step 5: Solve for x
    x = 7,694,320,183.41/90,233.15
  6. Step 6: Final answer
    x = 85,271.54

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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.