Home / 90,158.07-135,244.41-30,993.78

Finding the Fourth Proportional to 90,158.07, 135,244.41 and 30,993.78

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Solution

The fourth proportional to 90,158.07, 135,244.41 and 30,993.78 is: 46,493.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,158.07 : 135,244.41 = 30,993.78 : x
  2. Step 2: Convert to fraction form
    90,158.07/135,244.41 = 30,993.78/x
  3. Step 3: Cross multiply
    90,158.07x = 135,244.41 × 30,993.78
  4. Step 4: Simplify right side
    90,158.07x = 4,191,735,489.77
  5. Step 5: Solve for x
    x = 4,191,735,489.77/90,158.07
  6. Step 6: Final answer
    x = 46,493.18

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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.