Home / 121,639.68-167,843.61-67,922.10

Finding the Fourth Proportional to 121,639.68, 167,843.61 and 67,922.10

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Solution

The fourth proportional to 121,639.68, 167,843.61 and 67,922.10 is: 93,721.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,639.68 : 167,843.61 = 67,922.10 : x
  2. Step 2: Convert to fraction form
    121,639.68/167,843.61 = 67,922.10/x
  3. Step 3: Cross multiply
    121,639.68x = 167,843.61 × 67,922.10
  4. Step 4: Simplify right side
    121,639.68x = 11,400,290,462.78
  5. Step 5: Solve for x
    x = 11,400,290,462.78/121,639.68
  6. Step 6: Final answer
    x = 93,721.81

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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.