Home / 166,131.20-229,261.39-90,679.70

Finding the Fourth Proportional to 166,131.20, 229,261.39 and 90,679.70

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Solution

The fourth proportional to 166,131.20, 229,261.39 and 90,679.70 is: 125,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,131.20 : 229,261.39 = 90,679.70 : x
  2. Step 2: Convert to fraction form
    166,131.20/229,261.39 = 90,679.70/x
  3. Step 3: Cross multiply
    166,131.20x = 229,261.39 × 90,679.70
  4. Step 4: Simplify right side
    166,131.20x = 20,789,354,413.24
  5. Step 5: Solve for x
    x = 20,789,354,413.24/166,131.20
  6. Step 6: Final answer
    x = 125,138.17

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1.5x scale

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.