Home / 142,639.20-196,793.64-82,207.92

Finding the Fourth Proportional to 142,639.20, 196,793.64 and 82,207.92

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Solution

The fourth proportional to 142,639.20, 196,793.64 and 82,207.92 is: 113,419.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,639.20 : 196,793.64 = 82,207.92 : x
  2. Step 2: Convert to fraction form
    142,639.20/196,793.64 = 82,207.92/x
  3. Step 3: Cross multiply
    142,639.20x = 196,793.64 × 82,207.92
  4. Step 4: Simplify right side
    142,639.20x = 16,177,995,813.63
  5. Step 5: Solve for x
    x = 16,177,995,813.63/142,639.20
  6. Step 6: Final answer
    x = 113,419.00

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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.