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Finding the Fourth Proportional to 122,759.80, 184,139.70 and 43,876.60

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Solution

The fourth proportional to 122,759.80, 184,139.70 and 43,876.60 is: 65,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,759.80 : 184,139.70 = 43,876.60 : x
  2. Step 2: Convert to fraction form
    122,759.80/184,139.70 = 43,876.60/x
  3. Step 3: Cross multiply
    122,759.80x = 184,139.70 × 43,876.60
  4. Step 4: Simplify right side
    122,759.80x = 8,079,423,961.02
  5. Step 5: Solve for x
    x = 8,079,423,961.02/122,759.80
  6. Step 6: Final answer
    x = 65,814.90

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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.