Home / 90,832.20-136,478.70-80,694.60

Finding the Fourth Proportional to 90,832.20, 136,478.70 and 80,694.60

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Solution

The fourth proportional to 90,832.20, 136,478.70 and 80,694.60 is: 121,246.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,832.20 : 136,478.70 = 80,694.60 : x
  2. Step 2: Convert to fraction form
    90,832.20/136,478.70 = 80,694.60/x
  3. Step 3: Cross multiply
    90,832.20x = 136,478.70 × 80,694.60
  4. Step 4: Simplify right side
    90,832.20x = 11,013,094,105.02
  5. Step 5: Solve for x
    x = 11,013,094,105.02/90,832.20
  6. Step 6: Final answer
    x = 121,246.59

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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.