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Finding the Fourth Proportional to 121,361.92, 182,041.08 and 73,990.96

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Solution

The fourth proportional to 121,361.92, 182,041.08 and 73,990.96 is: 110,985.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,361.92 : 182,041.08 = 73,990.96 : x
  2. Step 2: Convert to fraction form
    121,361.92/182,041.08 = 73,990.96/x
  3. Step 3: Cross multiply
    121,361.92x = 182,041.08 × 73,990.96
  4. Step 4: Simplify right side
    121,361.92x = 13,469,394,268.64
  5. Step 5: Solve for x
    x = 13,469,394,268.64/121,361.92
  6. Step 6: Final answer
    x = 110,985.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.