Home / 201,768.21-278,429.03-111,107.05

Finding the Fourth Proportional to 201,768.21, 278,429.03 and 111,107.05

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Solution

The fourth proportional to 201,768.21, 278,429.03 and 111,107.05 is: 153,321.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,768.21 : 278,429.03 = 111,107.05 : x
  2. Step 2: Convert to fraction form
    201,768.21/278,429.03 = 111,107.05/x
  3. Step 3: Cross multiply
    201,768.21x = 278,429.03 × 111,107.05
  4. Step 4: Simplify right side
    201,768.21x = 30,935,428,157.66
  5. Step 5: Solve for x
    x = 30,935,428,157.66/201,768.21
  6. Step 6: Final answer
    x = 153,321.62

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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.