Home / 268,676.20-403,036.86-81,689.32

Finding the Fourth Proportional to 268,676.20, 403,036.86 and 81,689.32

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Solution

The fourth proportional to 268,676.20, 403,036.86 and 81,689.32 is: 122,540.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,676.20 : 403,036.86 = 81,689.32 : x
  2. Step 2: Convert to fraction form
    268,676.20/403,036.86 = 81,689.32/x
  3. Step 3: Cross multiply
    268,676.20x = 403,036.86 × 81,689.32
  4. Step 4: Simplify right side
    268,676.20x = 32,923,807,028.34
  5. Step 5: Solve for x
    x = 32,923,807,028.34/268,676.20
  6. Step 6: Final answer
    x = 122,540.84

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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.