Home / 90,198.10-135,298.08-40,280.74

Finding the Fourth Proportional to 90,198.10, 135,298.08 and 40,280.74

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Solution

The fourth proportional to 90,198.10, 135,298.08 and 40,280.74 is: 60,421.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,198.10 : 135,298.08 = 40,280.74 : x
  2. Step 2: Convert to fraction form
    90,198.10/135,298.08 = 40,280.74/x
  3. Step 3: Cross multiply
    90,198.10x = 135,298.08 × 40,280.74
  4. Step 4: Simplify right side
    90,198.10x = 5,449,906,782.98
  5. Step 5: Solve for x
    x = 5,449,906,782.98/90,198.10
  6. Step 6: Final answer
    x = 60,421.53

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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.