Home / 100,163.89-138,232.83-57,725.11

Finding the Fourth Proportional to 100,163.89, 138,232.83 and 57,725.11

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Solution

The fourth proportional to 100,163.89, 138,232.83 and 57,725.11 is: 79,664.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,163.89 : 138,232.83 = 57,725.11 : x
  2. Step 2: Convert to fraction form
    100,163.89/138,232.83 = 57,725.11/x
  3. Step 3: Cross multiply
    100,163.89x = 138,232.83 × 57,725.11
  4. Step 4: Simplify right side
    100,163.89x = 7,979,505,317.36
  5. Step 5: Solve for x
    x = 7,979,505,317.36/100,163.89
  6. Step 6: Final answer
    x = 79,664.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.