Home / 149,105.14-223,729.40-74,231.78

Finding the Fourth Proportional to 149,105.14, 223,729.40 and 74,231.78

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Solution

The fourth proportional to 149,105.14, 223,729.40 and 74,231.78 is: 111,383.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,105.14 : 223,729.40 = 74,231.78 : x
  2. Step 2: Convert to fraction form
    149,105.14/223,729.40 = 74,231.78/x
  3. Step 3: Cross multiply
    149,105.14x = 223,729.40 × 74,231.78
  4. Step 4: Simplify right side
    149,105.14x = 16,607,831,600.33
  5. Step 5: Solve for x
    x = 16,607,831,600.33/149,105.14
  6. Step 6: Final answer
    x = 111,383.36

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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.