Home / 111,949.20-167,923.80-78,706.80

Finding the Fourth Proportional to 111,949.20, 167,923.80 and 78,706.80

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Solution

The fourth proportional to 111,949.20, 167,923.80 and 78,706.80 is: 118,060.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,949.20 : 167,923.80 = 78,706.80 : x
  2. Step 2: Convert to fraction form
    111,949.20/167,923.80 = 78,706.80/x
  3. Step 3: Cross multiply
    111,949.20x = 167,923.80 × 78,706.80
  4. Step 4: Simplify right side
    111,949.20x = 13,216,744,941.84
  5. Step 5: Solve for x
    x = 13,216,744,941.84/111,949.20
  6. Step 6: Final answer
    x = 118,060.20

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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.