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Finding the Fourth Proportional to 111,264.80, 166,913.40 and 36,388.40

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Solution

The fourth proportional to 111,264.80, 166,913.40 and 36,388.40 is: 54,587.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,264.80 : 166,913.40 = 36,388.40 : x
  2. Step 2: Convert to fraction form
    111,264.80/166,913.40 = 36,388.40/x
  3. Step 3: Cross multiply
    111,264.80x = 166,913.40 × 36,388.40
  4. Step 4: Simplify right side
    111,264.80x = 6,073,711,564.56
  5. Step 5: Solve for x
    x = 6,073,711,564.56/111,264.80
  6. Step 6: Final answer
    x = 54,587.90

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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.