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Finding the Fourth Proportional to 111,213.40, 166,820.10 and 66,817.30

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Solution

The fourth proportional to 111,213.40, 166,820.10 and 66,817.30 is: 100,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,213.40 : 166,820.10 = 66,817.30 : x
  2. Step 2: Convert to fraction form
    111,213.40/166,820.10 = 66,817.30/x
  3. Step 3: Cross multiply
    111,213.40x = 166,820.10 × 66,817.30
  4. Step 4: Simplify right side
    111,213.40x = 11,146,468,667.73
  5. Step 5: Solve for x
    x = 11,146,468,667.73/111,213.40
  6. Step 6: Final answer
    x = 100,225.95

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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.