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Finding the Fourth Proportional to 121,399.36, 167,517.60 and 73,664.32

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Solution

The fourth proportional to 121,399.36, 167,517.60 and 73,664.32 is: 101,648.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,399.36 : 167,517.60 = 73,664.32 : x
  2. Step 2: Convert to fraction form
    121,399.36/167,517.60 = 73,664.32/x
  3. Step 3: Cross multiply
    121,399.36x = 167,517.60 × 73,664.32
  4. Step 4: Simplify right side
    121,399.36x = 12,340,070,092.03
  5. Step 5: Solve for x
    x = 12,340,070,092.03/121,399.36
  6. Step 6: Final answer
    x = 101,648.56

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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.