Home / 111,524.20-167,286.30-78,281.80

Finding the Fourth Proportional to 111,524.20, 167,286.30 and 78,281.80

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Solution

The fourth proportional to 111,524.20, 167,286.30 and 78,281.80 is: 117,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,524.20 : 167,286.30 = 78,281.80 : x
  2. Step 2: Convert to fraction form
    111,524.20/167,286.30 = 78,281.80/x
  3. Step 3: Cross multiply
    111,524.20x = 167,286.30 × 78,281.80
  4. Step 4: Simplify right side
    111,524.20x = 13,095,472,679.34
  5. Step 5: Solve for x
    x = 13,095,472,679.34/111,524.20
  6. Step 6: Final answer
    x = 117,422.70

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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.