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Finding the Fourth Proportional to 111,478.60, 166,958.70 and 76,227.40

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Solution

The fourth proportional to 111,478.60, 166,958.70 and 76,227.40 is: 114,163.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,478.60 : 166,958.70 = 76,227.40 : x
  2. Step 2: Convert to fraction form
    111,478.60/166,958.70 = 76,227.40/x
  3. Step 3: Cross multiply
    111,478.60x = 166,958.70 × 76,227.40
  4. Step 4: Simplify right side
    111,478.60x = 12,726,827,608.38
  5. Step 5: Solve for x
    x = 12,726,827,608.38/111,478.60
  6. Step 6: Final answer
    x = 114,163.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.