Home / 268,986.20-403,436.10-81,954.20

Finding the Fourth Proportional to 268,986.20, 403,436.10 and 81,954.20

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Solution

The fourth proportional to 268,986.20, 403,436.10 and 81,954.20 is: 122,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,986.20 : 403,436.10 = 81,954.20 : x
  2. Step 2: Convert to fraction form
    268,986.20/403,436.10 = 81,954.20/x
  3. Step 3: Cross multiply
    268,986.20x = 403,436.10 × 81,954.20
  4. Step 4: Simplify right side
    268,986.20x = 33,063,282,826.62
  5. Step 5: Solve for x
    x = 33,063,282,826.62/268,986.20
  6. Step 6: Final answer
    x = 122,918.14

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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.