Home / 121,935.75-168,277.89-68,217.57

Finding the Fourth Proportional to 121,935.75, 168,277.89 and 68,217.57

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Solution

The fourth proportional to 121,935.75, 168,277.89 and 68,217.57 is: 94,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,935.75 : 168,277.89 = 68,217.57 : x
  2. Step 2: Convert to fraction form
    121,935.75/168,277.89 = 68,217.57/x
  3. Step 3: Cross multiply
    121,935.75x = 168,277.89 × 68,217.57
  4. Step 4: Simplify right side
    121,935.75x = 11,479,508,740.53
  5. Step 5: Solve for x
    x = 11,479,508,740.53/121,935.75
  6. Step 6: Final answer
    x = 94,143.91

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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.