Home / 136,936.40-205,558.20-105,909.20

Finding the Fourth Proportional to 136,936.40, 205,558.20 and 105,909.20

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Solution

The fourth proportional to 136,936.40, 205,558.20 and 105,909.20 is: 158,982.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,936.40 : 205,558.20 = 105,909.20 : x
  2. Step 2: Convert to fraction form
    136,936.40/205,558.20 = 105,909.20/x
  3. Step 3: Cross multiply
    136,936.40x = 205,558.20 × 105,909.20
  4. Step 4: Simplify right side
    136,936.40x = 21,770,504,515.44
  5. Step 5: Solve for x
    x = 21,770,504,515.44/136,936.40
  6. Step 6: Final answer
    x = 158,982.60

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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.