Home / 111,942.20-167,913.30-103,388.60

Finding the Fourth Proportional to 111,942.20, 167,913.30 and 103,388.60

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Solution

The fourth proportional to 111,942.20, 167,913.30 and 103,388.60 is: 155,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,942.20 : 167,913.30 = 103,388.60 : x
  2. Step 2: Convert to fraction form
    111,942.20/167,913.30 = 103,388.60/x
  3. Step 3: Cross multiply
    111,942.20x = 167,913.30 × 103,388.60
  4. Step 4: Simplify right side
    111,942.20x = 17,360,321,008.38
  5. Step 5: Solve for x
    x = 17,360,321,008.38/111,942.20
  6. Step 6: Final answer
    x = 155,082.90

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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.