Home / 121,028.68-181,485.42-42,133.24

Finding the Fourth Proportional to 121,028.68, 181,485.42 and 42,133.24

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Solution

The fourth proportional to 121,028.68, 181,485.42 and 42,133.24 is: 63,179.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,028.68 : 181,485.42 = 42,133.24 : x
  2. Step 2: Convert to fraction form
    121,028.68/181,485.42 = 42,133.24/x
  3. Step 3: Cross multiply
    121,028.68x = 181,485.42 × 42,133.24
  4. Step 4: Simplify right side
    121,028.68x = 7,646,568,757.36
  5. Step 5: Solve for x
    x = 7,646,568,757.36/121,028.68
  6. Step 6: Final answer
    x = 63,179.81

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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.