Home / 268,745.58-403,178.31-81,771.66

Finding the Fourth Proportional to 268,745.58, 403,178.31 and 81,771.66

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Solution

The fourth proportional to 268,745.58, 403,178.31 and 81,771.66 is: 122,675.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,745.58 : 403,178.31 = 81,771.66 : x
  2. Step 2: Convert to fraction form
    268,745.58/403,178.31 = 81,771.66/x
  3. Step 3: Cross multiply
    268,745.58x = 403,178.31 × 81,771.66
  4. Step 4: Simplify right side
    268,745.58x = 32,968,559,684.69
  5. Step 5: Solve for x
    x = 32,968,559,684.69/268,745.58
  6. Step 6: Final answer
    x = 122,675.73

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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.