Home / 166,765.12-230,138.40-91,320.64

Finding the Fourth Proportional to 166,765.12, 230,138.40 and 91,320.64

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Solution

The fourth proportional to 166,765.12, 230,138.40 and 91,320.64 is: 126,023.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,765.12 : 230,138.40 = 91,320.64 : x
  2. Step 2: Convert to fraction form
    166,765.12/230,138.40 = 91,320.64/x
  3. Step 3: Cross multiply
    166,765.12x = 230,138.40 × 91,320.64
  4. Step 4: Simplify right side
    166,765.12x = 21,016,385,976.58
  5. Step 5: Solve for x
    x = 21,016,385,976.58/166,765.12
  6. Step 6: Final answer
    x = 126,023.87

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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.