Home / 123,231.20-184,933.20-78,965.60

Finding the Fourth Proportional to 123,231.20, 184,933.20 and 78,965.60

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Solution

The fourth proportional to 123,231.20, 184,933.20 and 78,965.60 is: 118,503.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,231.20 : 184,933.20 = 78,965.60 : x
  2. Step 2: Convert to fraction form
    123,231.20/184,933.20 = 78,965.60/x
  3. Step 3: Cross multiply
    123,231.20x = 184,933.20 × 78,965.60
  4. Step 4: Simplify right side
    123,231.20x = 14,603,361,097.92
  5. Step 5: Solve for x
    x = 14,603,361,097.92/123,231.20
  6. Step 6: Final answer
    x = 118,503.76

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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.