Home / 201,787.29-278,468.34-111,143.59

Finding the Fourth Proportional to 201,787.29, 278,468.34 and 111,143.59

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Solution

The fourth proportional to 201,787.29, 278,468.34 and 111,143.59 is: 153,379.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,787.29 : 278,468.34 = 111,143.59 : x
  2. Step 2: Convert to fraction form
    201,787.29/278,468.34 = 111,143.59/x
  3. Step 3: Cross multiply
    201,787.29x = 278,468.34 × 111,143.59
  4. Step 4: Simplify right side
    201,787.29x = 30,949,969,616.60
  5. Step 5: Solve for x
    x = 30,949,969,616.60/201,787.29
  6. Step 6: Final answer
    x = 153,379.18

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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.