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Finding the Fourth Proportional to 120,903.22, 166,861.79 and 73,156.96

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Solution

The fourth proportional to 120,903.22, 166,861.79 and 73,156.96 is: 100,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,903.22 : 166,861.79 = 73,156.96 : x
  2. Step 2: Convert to fraction form
    120,903.22/166,861.79 = 73,156.96/x
  3. Step 3: Cross multiply
    120,903.22x = 166,861.79 × 73,156.96
  4. Step 4: Simplify right side
    120,903.22x = 12,207,101,296.56
  5. Step 5: Solve for x
    x = 12,207,101,296.56/120,903.22
  6. Step 6: Final answer
    x = 100,965.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.