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Finding the Fourth Proportional to 122,956.80, 184,435.20 and 80,966.40

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Solution

The fourth proportional to 122,956.80, 184,435.20 and 80,966.40 is: 121,449.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,956.80 : 184,435.20 = 80,966.40 : x
  2. Step 2: Convert to fraction form
    122,956.80/184,435.20 = 80,966.40/x
  3. Step 3: Cross multiply
    122,956.80x = 184,435.20 × 80,966.40
  4. Step 4: Simplify right side
    122,956.80x = 14,933,054,177.28
  5. Step 5: Solve for x
    x = 14,933,054,177.28/122,956.80
  6. Step 6: Final answer
    x = 121,449.60

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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.