Home / 142,324.32-196,405.68-81,895.50

Finding the Fourth Proportional to 142,324.32, 196,405.68 and 81,895.50

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Solution

The fourth proportional to 142,324.32, 196,405.68 and 81,895.50 is: 113,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,324.32 : 196,405.68 = 81,895.50 : x
  2. Step 2: Convert to fraction form
    142,324.32/196,405.68 = 81,895.50/x
  3. Step 3: Cross multiply
    142,324.32x = 196,405.68 × 81,895.50
  4. Step 4: Simplify right side
    142,324.32x = 16,084,741,366.44
  5. Step 5: Solve for x
    x = 16,084,741,366.44/142,324.32
  6. Step 6: Final answer
    x = 113,014.71

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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.