Home / 121,388.22-167,515.85-67,672.16

Finding the Fourth Proportional to 121,388.22, 167,515.85 and 67,672.16

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Solution

The fourth proportional to 121,388.22, 167,515.85 and 67,672.16 is: 93,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,388.22 : 167,515.85 = 67,672.16 : x
  2. Step 2: Convert to fraction form
    121,388.22/167,515.85 = 67,672.16/x
  3. Step 3: Cross multiply
    121,388.22x = 167,515.85 × 67,672.16
  4. Step 4: Simplify right side
    121,388.22x = 11,336,158,982.87
  5. Step 5: Solve for x
    x = 11,336,158,982.87/121,388.22
  6. Step 6: Final answer
    x = 93,387.64

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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.