Home / 281,105.76-421,824.96-103,736.28

Finding the Fourth Proportional to 281,105.76, 421,824.96 and 103,736.28

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Solution

The fourth proportional to 281,105.76, 421,824.96 and 103,736.28 is: 155,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,105.76 : 421,824.96 = 103,736.28 : x
  2. Step 2: Convert to fraction form
    281,105.76/421,824.96 = 103,736.28/x
  3. Step 3: Cross multiply
    281,105.76x = 421,824.96 × 103,736.28
  4. Step 4: Simplify right side
    281,105.76x = 43,758,552,161.55
  5. Step 5: Solve for x
    x = 43,758,552,161.55/281,105.76
  6. Step 6: Final answer
    x = 155,665.80

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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.