Home / 201,728.12-278,382.46-111,082.20

Finding the Fourth Proportional to 201,728.12, 278,382.46 and 111,082.20

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Solution

The fourth proportional to 201,728.12, 278,382.46 and 111,082.20 is: 153,292.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,728.12 : 278,382.46 = 111,082.20 : x
  2. Step 2: Convert to fraction form
    201,728.12/278,382.46 = 111,082.20/x
  3. Step 3: Cross multiply
    201,728.12x = 278,382.46 × 111,082.20
  4. Step 4: Simplify right side
    201,728.12x = 30,923,336,098.21
  5. Step 5: Solve for x
    x = 30,923,336,098.21/201,728.12
  6. Step 6: Final answer
    x = 153,292.14

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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.