Home / 281,049.03-421,739.64-103,680.63

Finding the Fourth Proportional to 281,049.03, 421,739.64 and 103,680.63

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Solution

The fourth proportional to 281,049.03, 421,739.64 and 103,680.63 is: 155,582.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,049.03 : 421,739.64 = 103,680.63 : x
  2. Step 2: Convert to fraction form
    281,049.03/421,739.64 = 103,680.63/x
  3. Step 3: Cross multiply
    281,049.03x = 421,739.64 × 103,680.63
  4. Step 4: Simplify right side
    281,049.03x = 43,726,231,571.17
  5. Step 5: Solve for x
    x = 43,726,231,571.17/281,049.03
  6. Step 6: Final answer
    x = 155,582.22

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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.