Home / 100,219.72-138,396.18-75,025.48

Finding the Fourth Proportional to 100,219.72, 138,396.18 and 75,025.48

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Solution

The fourth proportional to 100,219.72, 138,396.18 and 75,025.48 is: 103,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,219.72 : 138,396.18 = 75,025.48 : x
  2. Step 2: Convert to fraction form
    100,219.72/138,396.18 = 75,025.48/x
  3. Step 3: Cross multiply
    100,219.72x = 138,396.18 × 75,025.48
  4. Step 4: Simplify right side
    100,219.72x = 10,383,239,834.67
  5. Step 5: Solve for x
    x = 10,383,239,834.67/100,219.72
  6. Step 6: Final answer
    x = 103,604.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.