Home / 149,260.38-205,976.37-81,278.18

Finding the Fourth Proportional to 149,260.38, 205,976.37 and 81,278.18

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Solution

The fourth proportional to 149,260.38, 205,976.37 and 81,278.18 is: 112,162.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,260.38 : 205,976.37 = 81,278.18 : x
  2. Step 2: Convert to fraction form
    149,260.38/205,976.37 = 81,278.18/x
  3. Step 3: Cross multiply
    149,260.38x = 205,976.37 × 81,278.18
  4. Step 4: Simplify right side
    149,260.38x = 16,741,384,476.61
  5. Step 5: Solve for x
    x = 16,741,384,476.61/149,260.38
  6. Step 6: Final answer
    x = 112,162.28

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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.