Home / 121,015.36-181,151.48-109,610.56

Finding the Fourth Proportional to 121,015.36, 181,151.48 and 109,610.56

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Solution

The fourth proportional to 121,015.36, 181,151.48 and 109,610.56 is: 164,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,015.36 : 181,151.48 = 109,610.56 : x
  2. Step 2: Convert to fraction form
    121,015.36/181,151.48 = 109,610.56/x
  3. Step 3: Cross multiply
    121,015.36x = 181,151.48 × 109,610.56
  4. Step 4: Simplify right side
    121,015.36x = 19,856,115,167.63
  5. Step 5: Solve for x
    x = 19,856,115,167.63/121,015.36
  6. Step 6: Final answer
    x = 164,079.30

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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.