Home / 166,766.12-230,139.78-91,321.64

Finding the Fourth Proportional to 166,766.12, 230,139.78 and 91,321.64

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Solution

The fourth proportional to 166,766.12, 230,139.78 and 91,321.64 is: 126,025.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,766.12 : 230,139.78 = 91,321.64 : x
  2. Step 2: Convert to fraction form
    166,766.12/230,139.78 = 91,321.64/x
  3. Step 3: Cross multiply
    166,766.12x = 230,139.78 × 91,321.64
  4. Step 4: Simplify right side
    166,766.12x = 21,016,742,138.84
  5. Step 5: Solve for x
    x = 21,016,742,138.84/166,766.12
  6. Step 6: Final answer
    x = 126,025.25

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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.