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Finding the Fourth Proportional to 137,361.27, 205,672.77 and 87,169.62

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Solution

The fourth proportional to 137,361.27, 205,672.77 and 87,169.62 is: 130,520.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,361.27 : 205,672.77 = 87,169.62 : x
  2. Step 2: Convert to fraction form
    137,361.27/205,672.77 = 87,169.62/x
  3. Step 3: Cross multiply
    137,361.27x = 205,672.77 × 87,169.62
  4. Step 4: Simplify right side
    137,361.27x = 17,928,417,205.25
  5. Step 5: Solve for x
    x = 17,928,417,205.25/137,361.27
  6. Step 6: Final answer
    x = 130,520.18

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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.