Home / 207,914.82-311,905.84-81,486.48

Finding the Fourth Proportional to 207,914.82, 311,905.84 and 81,486.48

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Solution

The fourth proportional to 207,914.82, 311,905.84 and 81,486.48 is: 122,242.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,914.82 : 311,905.84 = 81,486.48 : x
  2. Step 2: Convert to fraction form
    207,914.82/311,905.84 = 81,486.48/x
  3. Step 3: Cross multiply
    207,914.82x = 311,905.84 × 81,486.48
  4. Step 4: Simplify right side
    207,914.82x = 25,416,109,234.53
  5. Step 5: Solve for x
    x = 25,416,109,234.53/207,914.82
  6. Step 6: Final answer
    x = 122,242.89

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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.