Home / 189,035.86-260,907.21-108,517.78

Finding the Fourth Proportional to 189,035.86, 260,907.21 and 108,517.78

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Solution

The fourth proportional to 189,035.86, 260,907.21 and 108,517.78 is: 149,776.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,035.86 : 260,907.21 = 108,517.78 : x
  2. Step 2: Convert to fraction form
    189,035.86/260,907.21 = 108,517.78/x
  3. Step 3: Cross multiply
    189,035.86x = 260,907.21 × 108,517.78
  4. Step 4: Simplify right side
    189,035.86x = 28,313,071,215.19
  5. Step 5: Solve for x
    x = 28,313,071,215.19/189,035.86
  6. Step 6: Final answer
    x = 149,776.19

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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.