Home / 100,751.20-151,135.26-30,631.12

Finding the Fourth Proportional to 100,751.20, 151,135.26 and 30,631.12

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Solution

The fourth proportional to 100,751.20, 151,135.26 and 30,631.12 is: 45,949.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,751.20 : 151,135.26 = 30,631.12 : x
  2. Step 2: Convert to fraction form
    100,751.20/151,135.26 = 30,631.12/x
  3. Step 3: Cross multiply
    100,751.20x = 151,135.26 × 30,631.12
  4. Step 4: Simplify right side
    100,751.20x = 4,629,442,285.29
  5. Step 5: Solve for x
    x = 4,629,442,285.29/100,751.20
  6. Step 6: Final answer
    x = 45,949.25

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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.