Home / 188,768.13-260,505.78-108,211.20

Finding the Fourth Proportional to 188,768.13, 260,505.78 and 108,211.20

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Solution

The fourth proportional to 188,768.13, 260,505.78 and 108,211.20 is: 149,334.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,768.13 : 260,505.78 = 108,211.20 : x
  2. Step 2: Convert to fraction form
    188,768.13/260,505.78 = 108,211.20/x
  3. Step 3: Cross multiply
    188,768.13x = 260,505.78 × 108,211.20
  4. Step 4: Simplify right side
    188,768.13x = 28,189,643,060.74
  5. Step 5: Solve for x
    x = 28,189,643,060.74/188,768.13
  6. Step 6: Final answer
    x = 149,334.76

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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.