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Finding the Fourth Proportional to 120,367.48, 166,081.32 and 72,620.14

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Solution

The fourth proportional to 120,367.48, 166,081.32 and 72,620.14 is: 100,200.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,367.48 : 166,081.32 = 72,620.14 : x
  2. Step 2: Convert to fraction form
    120,367.48/166,081.32 = 72,620.14/x
  3. Step 3: Cross multiply
    120,367.48x = 166,081.32 × 72,620.14
  4. Step 4: Simplify right side
    120,367.48x = 12,060,848,709.78
  5. Step 5: Solve for x
    x = 12,060,848,709.78/120,367.48
  6. Step 6: Final answer
    x = 100,200.23

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