Home / 189,389.13-261,355.17-108,813.97

Finding the Fourth Proportional to 189,389.13, 261,355.17 and 108,813.97

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Solution

The fourth proportional to 189,389.13, 261,355.17 and 108,813.97 is: 150,162.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,389.13 : 261,355.17 = 108,813.97 : x
  2. Step 2: Convert to fraction form
    189,389.13/261,355.17 = 108,813.97/x
  3. Step 3: Cross multiply
    189,389.13x = 261,355.17 × 108,813.97
  4. Step 4: Simplify right side
    189,389.13x = 28,439,093,627.72
  5. Step 5: Solve for x
    x = 28,439,093,627.72/189,389.13
  6. Step 6: Final answer
    x = 150,162.23

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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.