Home / 268,742.58-403,099.29-81,739.50

Finding the Fourth Proportional to 268,742.58, 403,099.29 and 81,739.50

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Solution

The fourth proportional to 268,742.58, 403,099.29 and 81,739.50 is: 122,604.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,742.58 : 403,099.29 = 81,739.50 : x
  2. Step 2: Convert to fraction form
    268,742.58/403,099.29 = 81,739.50/x
  3. Step 3: Cross multiply
    268,742.58x = 403,099.29 × 81,739.50
  4. Step 4: Simplify right side
    268,742.58x = 32,949,134,414.96
  5. Step 5: Solve for x
    x = 32,949,134,414.96/268,742.58
  6. Step 6: Final answer
    x = 122,604.82

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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.