Home / 103,524.20-155,286.30-90,693.80

Finding the Fourth Proportional to 103,524.20, 155,286.30 and 90,693.80

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Solution

The fourth proportional to 103,524.20, 155,286.30 and 90,693.80 is: 136,040.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,524.20 : 155,286.30 = 90,693.80 : x
  2. Step 2: Convert to fraction form
    103,524.20/155,286.30 = 90,693.80/x
  3. Step 3: Cross multiply
    103,524.20x = 155,286.30 × 90,693.80
  4. Step 4: Simplify right side
    103,524.20x = 14,083,504,634.94
  5. Step 5: Solve for x
    x = 14,083,504,634.94/103,524.20
  6. Step 6: Final answer
    x = 136,040.70

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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.