Home / 127,940.20-191,910.36-68,803.72

Finding the Fourth Proportional to 127,940.20, 191,910.36 and 68,803.72

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Solution

The fourth proportional to 127,940.20, 191,910.36 and 68,803.72 is: 103,205.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940.20 : 191,910.36 = 68,803.72 : x
  2. Step 2: Convert to fraction form
    127,940.20/191,910.36 = 68,803.72/x
  3. Step 3: Cross multiply
    127,940.20x = 191,910.36 × 68,803.72
  4. Step 4: Simplify right side
    127,940.20x = 13,204,146,674.54
  5. Step 5: Solve for x
    x = 13,204,146,674.54/127,940.20
  6. Step 6: Final answer
    x = 103,205.61

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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.