Home / 80,887.70-121,331.55-68,057.30

Finding the Fourth Proportional to 80,887.70, 121,331.55 and 68,057.30

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Solution

The fourth proportional to 80,887.70, 121,331.55 and 68,057.30 is: 102,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,887.70 : 121,331.55 = 68,057.30 : x
  2. Step 2: Convert to fraction form
    80,887.70/121,331.55 = 68,057.30/x
  3. Step 3: Cross multiply
    80,887.70x = 121,331.55 × 68,057.30
  4. Step 4: Simplify right side
    80,887.70x = 8,257,497,697.82
  5. Step 5: Solve for x
    x = 8,257,497,697.82/80,887.70
  6. Step 6: Final answer
    x = 102,085.95

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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.