Home / 208,839.40-313,259.10-68,612.20

Finding the Fourth Proportional to 208,839.40, 313,259.10 and 68,612.20

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Solution

The fourth proportional to 208,839.40, 313,259.10 and 68,612.20 is: 102,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,839.40 : 313,259.10 = 68,612.20 : x
  2. Step 2: Convert to fraction form
    208,839.40/313,259.10 = 68,612.20/x
  3. Step 3: Cross multiply
    208,839.40x = 313,259.10 × 68,612.20
  4. Step 4: Simplify right side
    208,839.40x = 21,493,396,021.02
  5. Step 5: Solve for x
    x = 21,493,396,021.02/208,839.40
  6. Step 6: Final answer
    x = 102,918.30

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1.5x scale

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.