Home / 137,217.28-189,361.92-76,791.04

Finding the Fourth Proportional to 137,217.28, 189,361.92 and 76,791.04

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Solution

The fourth proportional to 137,217.28, 189,361.92 and 76,791.04 is: 105,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,217.28 : 189,361.92 = 76,791.04 : x
  2. Step 2: Convert to fraction form
    137,217.28/189,361.92 = 76,791.04/x
  3. Step 3: Cross multiply
    137,217.28x = 189,361.92 × 76,791.04
  4. Step 4: Simplify right side
    137,217.28x = 14,541,298,773.20
  5. Step 5: Solve for x
    x = 14,541,298,773.20/137,217.28
  6. Step 6: Final answer
    x = 105,972.80

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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.