Home / 281,370.64-421,919.88-103,961.20

Finding the Fourth Proportional to 281,370.64, 421,919.88 and 103,961.20

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Solution

The fourth proportional to 281,370.64, 421,919.88 and 103,961.20 is: 155,891.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,370.64 : 421,919.88 = 103,961.20 : x
  2. Step 2: Convert to fraction form
    281,370.64/421,919.88 = 103,961.20/x
  3. Step 3: Cross multiply
    281,370.64x = 421,919.88 × 103,961.20
  4. Step 4: Simplify right side
    281,370.64x = 43,863,297,028.66
  5. Step 5: Solve for x
    x = 43,863,297,028.66/281,370.64
  6. Step 6: Final answer
    x = 155,891.52

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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.