Home / 268,105.14-402,157.38-68,425.56

Finding the Fourth Proportional to 268,105.14, 402,157.38 and 68,425.56

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Solution

The fourth proportional to 268,105.14, 402,157.38 and 68,425.56 is: 102,638.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,105.14 : 402,157.38 = 68,425.56 : x
  2. Step 2: Convert to fraction form
    268,105.14/402,157.38 = 68,425.56/x
  3. Step 3: Cross multiply
    268,105.14x = 402,157.38 × 68,425.56
  4. Step 4: Simplify right side
    268,105.14x = 27,517,843,934.63
  5. Step 5: Solve for x
    x = 27,517,843,934.63/268,105.14
  6. Step 6: Final answer
    x = 102,638.26

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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.