Home / 207,818.11-311,164.10-107,768.50

Finding the Fourth Proportional to 207,818.11, 311,164.10 and 107,768.50

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Solution

The fourth proportional to 207,818.11, 311,164.10 and 107,768.50 is: 161,360.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,818.11 : 311,164.10 = 107,768.50 : x
  2. Step 2: Convert to fraction form
    207,818.11/311,164.10 = 107,768.50/x
  3. Step 3: Cross multiply
    207,818.11x = 311,164.10 × 107,768.50
  4. Step 4: Simplify right side
    207,818.11x = 33,533,688,310.85
  5. Step 5: Solve for x
    x = 33,533,688,310.85/207,818.11
  6. Step 6: Final answer
    x = 161,360.76

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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.