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Finding the Fourth Proportional to 111,311.88, 166,984.20 and 40,239.84

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Solution

The fourth proportional to 111,311.88, 166,984.20 and 40,239.84 is: 60,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,311.88 : 166,984.20 = 40,239.84 : x
  2. Step 2: Convert to fraction form
    111,311.88/166,984.20 = 40,239.84/x
  3. Step 3: Cross multiply
    111,311.88x = 166,984.20 × 40,239.84
  4. Step 4: Simplify right side
    111,311.88x = 6,719,417,490.53
  5. Step 5: Solve for x
    x = 6,719,417,490.53/111,311.88
  6. Step 6: Final answer
    x = 60,365.68

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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.