Home / 89,080.20-133,620.30-87,697.80

Finding the Fourth Proportional to 89,080.20, 133,620.30 and 87,697.80

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Solution

The fourth proportional to 89,080.20, 133,620.30 and 87,697.80 is: 131,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,080.20 : 133,620.30 = 87,697.80 : x
  2. Step 2: Convert to fraction form
    89,080.20/133,620.30 = 87,697.80/x
  3. Step 3: Cross multiply
    89,080.20x = 133,620.30 × 87,697.80
  4. Step 4: Simplify right side
    89,080.20x = 11,718,206,345.34
  5. Step 5: Solve for x
    x = 11,718,206,345.34/89,080.20
  6. Step 6: Final answer
    x = 131,546.70

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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.