Home / 209,195.10-313,761.87-68,935.50

Finding the Fourth Proportional to 209,195.10, 313,761.87 and 68,935.50

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Solution

The fourth proportional to 209,195.10, 313,761.87 and 68,935.50 is: 103,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,195.10 : 313,761.87 = 68,935.50 : x
  2. Step 2: Convert to fraction form
    209,195.10/313,761.87 = 68,935.50/x
  3. Step 3: Cross multiply
    209,195.10x = 313,761.87 × 68,935.50
  4. Step 4: Simplify right side
    209,195.10x = 21,629,331,389.39
  5. Step 5: Solve for x
    x = 21,629,331,389.39/209,195.10
  6. Step 6: Final answer
    x = 103,393.11

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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.