Home / 281,121.16-421,738.17-103,629.10

Finding the Fourth Proportional to 281,121.16, 421,738.17 and 103,629.10

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Solution

The fourth proportional to 281,121.16, 421,738.17 and 103,629.10 is: 155,464.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,121.16 : 421,738.17 = 103,629.10 : x
  2. Step 2: Convert to fraction form
    281,121.16/421,738.17 = 103,629.10/x
  3. Step 3: Cross multiply
    281,121.16x = 421,738.17 × 103,629.10
  4. Step 4: Simplify right side
    281,121.16x = 43,704,346,992.75
  5. Step 5: Solve for x
    x = 43,704,346,992.75/281,121.16
  6. Step 6: Final answer
    x = 155,464.45

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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.