Home / 142,183.71-196,213.26-81,766.02

Finding the Fourth Proportional to 142,183.71, 196,213.26 and 81,766.02

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Solution

The fourth proportional to 142,183.71, 196,213.26 and 81,766.02 is: 112,836.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,183.71 : 196,213.26 = 81,766.02 : x
  2. Step 2: Convert to fraction form
    142,183.71/196,213.26 = 81,766.02/x
  3. Step 3: Cross multiply
    142,183.71x = 196,213.26 × 81,766.02
  4. Step 4: Simplify right side
    142,183.71x = 16,043,577,341.43
  5. Step 5: Solve for x
    x = 16,043,577,341.43/142,183.71
  6. Step 6: Final answer
    x = 112,836.96

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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.