Home / 90,622.40-135,933.60-89,067.20

Finding the Fourth Proportional to 90,622.40, 135,933.60 and 89,067.20

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Solution

The fourth proportional to 90,622.40, 135,933.60 and 89,067.20 is: 133,600.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,622.40 : 135,933.60 = 89,067.20 : x
  2. Step 2: Convert to fraction form
    90,622.40/135,933.60 = 89,067.20/x
  3. Step 3: Cross multiply
    90,622.40x = 135,933.60 × 89,067.20
  4. Step 4: Simplify right side
    90,622.40x = 12,107,225,137.92
  5. Step 5: Solve for x
    x = 12,107,225,137.92/90,622.40
  6. Step 6: Final answer
    x = 133,600.80

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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.