Home / 189,135.36-261,022.44-108,578.46

Finding the Fourth Proportional to 189,135.36, 261,022.44 and 108,578.46

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Solution

The fourth proportional to 189,135.36, 261,022.44 and 108,578.46 is: 149,847.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,135.36 : 261,022.44 = 108,578.46 : x
  2. Step 2: Convert to fraction form
    189,135.36/261,022.44 = 108,578.46/x
  3. Step 3: Cross multiply
    189,135.36x = 261,022.44 × 108,578.46
  4. Step 4: Simplify right side
    189,135.36x = 28,341,414,560.64
  5. Step 5: Solve for x
    x = 28,341,414,560.64/189,135.36
  6. Step 6: Final answer
    x = 149,847.26

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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.