Home / 137,414.32-189,588.72-76,976.80

Finding the Fourth Proportional to 137,414.32, 189,588.72 and 76,976.80

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Solution

The fourth proportional to 137,414.32, 189,588.72 and 76,976.80 is: 106,203.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,414.32 : 189,588.72 = 76,976.80 : x
  2. Step 2: Convert to fraction form
    137,414.32/189,588.72 = 76,976.80/x
  3. Step 3: Cross multiply
    137,414.32x = 189,588.72 × 76,976.80
  4. Step 4: Simplify right side
    137,414.32x = 14,593,932,981.70
  5. Step 5: Solve for x
    x = 14,593,932,981.70/137,414.32
  6. Step 6: Final answer
    x = 106,203.87

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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.