Home / 111,610.20-167,415.30-78,367.80

Finding the Fourth Proportional to 111,610.20, 167,415.30 and 78,367.80

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Solution

The fourth proportional to 111,610.20, 167,415.30 and 78,367.80 is: 117,551.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,610.20 : 167,415.30 = 78,367.80 : x
  2. Step 2: Convert to fraction form
    111,610.20/167,415.30 = 78,367.80/x
  3. Step 3: Cross multiply
    111,610.20x = 167,415.30 × 78,367.80
  4. Step 4: Simplify right side
    111,610.20x = 13,119,968,747.34
  5. Step 5: Solve for x
    x = 13,119,968,747.34/111,610.20
  6. Step 6: Final answer
    x = 117,551.70

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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.