Home / 208,936.80-313,288.56-68,683.68

Finding the Fourth Proportional to 208,936.80, 313,288.56 and 68,683.68

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Solution

The fourth proportional to 208,936.80, 313,288.56 and 68,683.68 is: 102,987.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,936.80 : 313,288.56 = 68,683.68 : x
  2. Step 2: Convert to fraction form
    208,936.80/313,288.56 = 68,683.68/x
  3. Step 3: Cross multiply
    208,936.80x = 313,288.56 × 68,683.68
  4. Step 4: Simplify right side
    208,936.80x = 21,517,811,202.70
  5. Step 5: Solve for x
    x = 21,517,811,202.70/208,936.80
  6. Step 6: Final answer
    x = 102,987.18

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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.