Home / 90,006.20-134,847.30-71,408.60

Finding the Fourth Proportional to 90,006.20, 134,847.30 and 71,408.60

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Solution

The fourth proportional to 90,006.20, 134,847.30 and 71,408.60 is: 106,984.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,006.20 : 134,847.30 = 71,408.60 : x
  2. Step 2: Convert to fraction form
    90,006.20/134,847.30 = 71,408.60/x
  3. Step 3: Cross multiply
    90,006.20x = 134,847.30 × 71,408.60
  4. Step 4: Simplify right side
    90,006.20x = 9,629,256,906.78
  5. Step 5: Solve for x
    x = 9,629,256,906.78/90,006.20
  6. Step 6: Final answer
    x = 106,984.37

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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.