Home / 121,397.15-167,468.54-81,120.83

Finding the Fourth Proportional to 121,397.15, 167,468.54 and 81,120.83

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Solution

The fourth proportional to 121,397.15, 167,468.54 and 81,120.83 is: 111,906.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,397.15 : 167,468.54 = 81,120.83 : x
  2. Step 2: Convert to fraction form
    121,397.15/167,468.54 = 81,120.83/x
  3. Step 3: Cross multiply
    121,397.15x = 167,468.54 × 81,120.83
  4. Step 4: Simplify right side
    121,397.15x = 13,585,185,720.74
  5. Step 5: Solve for x
    x = 13,585,185,720.74/121,397.15
  6. Step 6: Final answer
    x = 111,906.96

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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.