Home / 201,969.15-278,704.75-111,320.12

Finding the Fourth Proportional to 201,969.15, 278,704.75 and 111,320.12

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Solution

The fourth proportional to 201,969.15, 278,704.75 and 111,320.12 is: 153,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,969.15 : 278,704.75 = 111,320.12 : x
  2. Step 2: Convert to fraction form
    201,969.15/278,704.75 = 111,320.12/x
  3. Step 3: Cross multiply
    201,969.15x = 278,704.75 × 111,320.12
  4. Step 4: Simplify right side
    201,969.15x = 31,025,446,841.76
  5. Step 5: Solve for x
    x = 31,025,446,841.76/201,969.15
  6. Step 6: Final answer
    x = 153,614.78

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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.