Home / 89,890.20-134,835.30-80,704.80

Finding the Fourth Proportional to 89,890.20, 134,835.30 and 80,704.80

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Solution

The fourth proportional to 89,890.20, 134,835.30 and 80,704.80 is: 121,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,890.20 : 134,835.30 = 80,704.80 : x
  2. Step 2: Convert to fraction form
    89,890.20/134,835.30 = 80,704.80/x
  3. Step 3: Cross multiply
    89,890.20x = 134,835.30 × 80,704.80
  4. Step 4: Simplify right side
    89,890.20x = 10,881,855,919.44
  5. Step 5: Solve for x
    x = 10,881,855,919.44/89,890.20
  6. Step 6: Final answer
    x = 121,057.20

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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.