Home / 123,188.20-184,868.70-78,922.60

Finding the Fourth Proportional to 123,188.20, 184,868.70 and 78,922.60

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Solution

The fourth proportional to 123,188.20, 184,868.70 and 78,922.60 is: 118,439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,188.20 : 184,868.70 = 78,922.60 : x
  2. Step 2: Convert to fraction form
    123,188.20/184,868.70 = 78,922.60/x
  3. Step 3: Cross multiply
    123,188.20x = 184,868.70 × 78,922.60
  4. Step 4: Simplify right side
    123,188.20x = 14,590,318,462.62
  5. Step 5: Solve for x
    x = 14,590,318,462.62/123,188.20
  6. Step 6: Final answer
    x = 118,439.25

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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.