Home / 208,025.82-311,999.67-81,661.14

Finding the Fourth Proportional to 208,025.82, 311,999.67 and 81,661.14

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Solution

The fourth proportional to 208,025.82, 311,999.67 and 81,661.14 is: 122,476.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,025.82 : 311,999.67 = 81,661.14 : x
  2. Step 2: Convert to fraction form
    208,025.82/311,999.67 = 81,661.14/x
  3. Step 3: Cross multiply
    208,025.82x = 311,999.67 × 81,661.14
  4. Step 4: Simplify right side
    208,025.82x = 25,478,248,731.82
  5. Step 5: Solve for x
    x = 25,478,248,731.82/208,025.82
  6. Step 6: Final answer
    x = 122,476.38

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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.