Home / 142,765.28-197,016.40-79,103.52

Finding the Fourth Proportional to 142,765.28, 197,016.40 and 79,103.52

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Solution

The fourth proportional to 142,765.28, 197,016.40 and 79,103.52 is: 109,163.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,765.28 : 197,016.40 = 79,103.52 : x
  2. Step 2: Convert to fraction form
    142,765.28/197,016.40 = 79,103.52/x
  3. Step 3: Cross multiply
    142,765.28x = 197,016.40 × 79,103.52
  4. Step 4: Simplify right side
    142,765.28x = 15,584,690,737.73
  5. Step 5: Solve for x
    x = 15,584,690,737.73/142,765.28
  6. Step 6: Final answer
    x = 109,163.03

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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.