Home / 121,388.72-167,516.54-67,672.66

Finding the Fourth Proportional to 121,388.72, 167,516.54 and 67,672.66

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Solution

The fourth proportional to 121,388.72, 167,516.54 and 67,672.66 is: 93,388.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,388.72 : 167,516.54 = 67,672.66 : x
  2. Step 2: Convert to fraction form
    121,388.72/167,516.54 = 67,672.66/x
  3. Step 3: Cross multiply
    121,388.72x = 167,516.54 × 67,672.66
  4. Step 4: Simplify right side
    121,388.72x = 11,336,289,517.43
  5. Step 5: Solve for x
    x = 11,336,289,517.43/121,388.72
  6. Step 6: Final answer
    x = 93,388.33

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1.5x scale

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.