Home / 221,669.28-305,889.48-121,067.28

Finding the Fourth Proportional to 221,669.28, 305,889.48 and 121,067.28

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Solution

The fourth proportional to 221,669.28, 305,889.48 and 121,067.28 is: 167,065.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,669.28 : 305,889.48 = 121,067.28 : x
  2. Step 2: Convert to fraction form
    221,669.28/305,889.48 = 121,067.28/x
  3. Step 3: Cross multiply
    221,669.28x = 305,889.48 × 121,067.28
  4. Step 4: Simplify right side
    221,669.28x = 37,033,207,324.21
  5. Step 5: Solve for x
    x = 37,033,207,324.21/221,669.28
  6. Step 6: Final answer
    x = 167,065.13

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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.