Home / 121,147.26-167,112.36-78,734.04

Finding the Fourth Proportional to 121,147.26, 167,112.36 and 78,734.04

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Solution

The fourth proportional to 121,147.26, 167,112.36 and 78,734.04 is: 108,606.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,147.26 : 167,112.36 = 78,734.04 : x
  2. Step 2: Convert to fraction form
    121,147.26/167,112.36 = 78,734.04/x
  3. Step 3: Cross multiply
    121,147.26x = 167,112.36 × 78,734.04
  4. Step 4: Simplify right side
    121,147.26x = 13,157,431,236.73
  5. Step 5: Solve for x
    x = 13,157,431,236.73/121,147.26
  6. Step 6: Final answer
    x = 108,606.92

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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.