Home / 72,122.12-108,183.18-19,531.62

Finding the Fourth Proportional to 72,122.12, 108,183.18 and 19,531.62

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Solution

The fourth proportional to 72,122.12, 108,183.18 and 19,531.62 is: 29,297.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,122.12 : 108,183.18 = 19,531.62 : x
  2. Step 2: Convert to fraction form
    72,122.12/108,183.18 = 19,531.62/x
  3. Step 3: Cross multiply
    72,122.12x = 108,183.18 × 19,531.62
  4. Step 4: Simplify right side
    72,122.12x = 2,112,992,762.15
  5. Step 5: Solve for x
    x = 2,112,992,762.15/72,122.12
  6. Step 6: Final answer
    x = 29,297.43

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1.5x scale

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.