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Finding the Fourth Proportional to 89,080.40, 133,620.60 and 81,822.80

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Solution

The fourth proportional to 89,080.40, 133,620.60 and 81,822.80 is: 122,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,080.40 : 133,620.60 = 81,822.80 : x
  2. Step 2: Convert to fraction form
    89,080.40/133,620.60 = 81,822.80/x
  3. Step 3: Cross multiply
    89,080.40x = 133,620.60 × 81,822.80
  4. Step 4: Simplify right side
    89,080.40x = 10,933,211,629.68
  5. Step 5: Solve for x
    x = 10,933,211,629.68/89,080.40
  6. Step 6: Final answer
    x = 122,734.20

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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.