Home / 123,022.20-184,619.70-78,756.60

Finding the Fourth Proportional to 123,022.20, 184,619.70 and 78,756.60

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Solution

The fourth proportional to 123,022.20, 184,619.70 and 78,756.60 is: 118,190.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,022.20 : 184,619.70 = 78,756.60 : x
  2. Step 2: Convert to fraction form
    123,022.20/184,619.70 = 78,756.60/x
  3. Step 3: Cross multiply
    123,022.20x = 184,619.70 × 78,756.60
  4. Step 4: Simplify right side
    123,022.20x = 14,540,019,865.02
  5. Step 5: Solve for x
    x = 14,540,019,865.02/123,022.20
  6. Step 6: Final answer
    x = 118,190.21

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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.