Home / 121,865.77-168,167.78-67,414.69

Finding the Fourth Proportional to 121,865.77, 168,167.78 and 67,414.69

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Solution

The fourth proportional to 121,865.77, 168,167.78 and 67,414.69 is: 93,028.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,865.77 : 168,167.78 = 67,414.69 : x
  2. Step 2: Convert to fraction form
    121,865.77/168,167.78 = 67,414.69/x
  3. Step 3: Cross multiply
    121,865.77x = 168,167.78 × 67,414.69
  4. Step 4: Simplify right side
    121,865.77x = 11,336,978,756.69
  5. Step 5: Solve for x
    x = 11,336,978,756.69/121,865.77
  6. Step 6: Final answer
    x = 93,028.41

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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.