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Finding the Fourth Proportional to 122,708.54, 184,003.88 and 72,795.12

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Solution

The fourth proportional to 122,708.54, 184,003.88 and 72,795.12 is: 109,157.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,708.54 : 184,003.88 = 72,795.12 : x
  2. Step 2: Convert to fraction form
    122,708.54/184,003.88 = 72,795.12/x
  3. Step 3: Cross multiply
    122,708.54x = 184,003.88 × 72,795.12
  4. Step 4: Simplify right side
    122,708.54x = 13,394,584,161.09
  5. Step 5: Solve for x
    x = 13,394,584,161.09/122,708.54
  6. Step 6: Final answer
    x = 109,157.72

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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.