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Finding the Fourth Proportional to 111,481.60, 166,963.20 and 76,230.40

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Solution

The fourth proportional to 111,481.60, 166,963.20 and 76,230.40 is: 114,168.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,481.60 : 166,963.20 = 76,230.40 : x
  2. Step 2: Convert to fraction form
    111,481.60/166,963.20 = 76,230.40/x
  3. Step 3: Cross multiply
    111,481.60x = 166,963.20 × 76,230.40
  4. Step 4: Simplify right side
    111,481.60x = 12,727,671,521.28
  5. Step 5: Solve for x
    x = 12,727,671,521.28/111,481.60
  6. Step 6: Final answer
    x = 114,168.36

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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.