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Finding the Fourth Proportional to 122,716.60, 184,182.90 and 72,734.20

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Solution

The fourth proportional to 122,716.60, 184,182.90 and 72,734.20 is: 109,165.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,716.60 : 184,182.90 = 72,734.20 : x
  2. Step 2: Convert to fraction form
    122,716.60/184,182.90 = 72,734.20/x
  3. Step 3: Cross multiply
    122,716.60x = 184,182.90 × 72,734.20
  4. Step 4: Simplify right side
    122,716.60x = 13,396,395,885.18
  5. Step 5: Solve for x
    x = 13,396,395,885.18/122,716.60
  6. Step 6: Final answer
    x = 109,165.31

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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.