Home / 75,183.39-112,795.88-66,921.12

Finding the Fourth Proportional to 75,183.39, 112,795.88 and 66,921.12

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Solution

The fourth proportional to 75,183.39, 112,795.88 and 66,921.12 is: 100,400.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,183.39 : 112,795.88 = 66,921.12 : x
  2. Step 2: Convert to fraction form
    75,183.39/112,795.88 = 66,921.12/x
  3. Step 3: Cross multiply
    75,183.39x = 112,795.88 × 66,921.12
  4. Step 4: Simplify right side
    75,183.39x = 7,548,426,286.38
  5. Step 5: Solve for x
    x = 7,548,426,286.38/75,183.39
  6. Step 6: Final answer
    x = 100,400.19

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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.