Home / 208,985.82-313,524.09-68,739.18

Finding the Fourth Proportional to 208,985.82, 313,524.09 and 68,739.18

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Solution

The fourth proportional to 208,985.82, 313,524.09 and 68,739.18 is: 103,123.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,985.82 : 313,524.09 = 68,739.18 : x
  2. Step 2: Convert to fraction form
    208,985.82/313,524.09 = 68,739.18/x
  3. Step 3: Cross multiply
    208,985.82x = 313,524.09 × 68,739.18
  4. Step 4: Simplify right side
    208,985.82x = 21,551,388,856.85
  5. Step 5: Solve for x
    x = 21,551,388,856.85/208,985.82
  6. Step 6: Final answer
    x = 103,123.69

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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.