Home / 209,003.20-313,504.80-68,743.60

Finding the Fourth Proportional to 209,003.20, 313,504.80 and 68,743.60

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Solution

The fourth proportional to 209,003.20, 313,504.80 and 68,743.60 is: 103,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,003.20 : 313,504.80 = 68,743.60 : x
  2. Step 2: Convert to fraction form
    209,003.20/313,504.80 = 68,743.60/x
  3. Step 3: Cross multiply
    209,003.20x = 313,504.80 × 68,743.60
  4. Step 4: Simplify right side
    209,003.20x = 21,551,448,569.28
  5. Step 5: Solve for x
    x = 21,551,448,569.28/209,003.20
  6. Step 6: Final answer
    x = 103,115.40

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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.