Home / 188,865.12-260,612.16-108,288.96

Finding the Fourth Proportional to 188,865.12, 260,612.16 and 108,288.96

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Solution

The fourth proportional to 188,865.12, 260,612.16 and 108,288.96 is: 149,426.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,865.12 : 260,612.16 = 108,288.96 : x
  2. Step 2: Convert to fraction form
    188,865.12/260,612.16 = 108,288.96/x
  3. Step 3: Cross multiply
    188,865.12x = 260,612.16 × 108,288.96
  4. Step 4: Simplify right side
    188,865.12x = 28,221,419,769.75
  5. Step 5: Solve for x
    x = 28,221,419,769.75/188,865.12
  6. Step 6: Final answer
    x = 149,426.32

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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.