Home / 101,288.20-151,917.90-31,174.60

Finding the Fourth Proportional to 101,288.20, 151,917.90 and 31,174.60

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Solution

The fourth proportional to 101,288.20, 151,917.90 and 31,174.60 is: 46,757.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,288.20 : 151,917.90 = 31,174.60 : x
  2. Step 2: Convert to fraction form
    101,288.20/151,917.90 = 31,174.60/x
  3. Step 3: Cross multiply
    101,288.20x = 151,917.90 × 31,174.60
  4. Step 4: Simplify right side
    101,288.20x = 4,735,979,765.34
  5. Step 5: Solve for x
    x = 4,735,979,765.34/101,288.20
  6. Step 6: Final answer
    x = 46,757.47

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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.