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Finding the Fourth Proportional to 120,383.88, 180,591.18 and 45,549.96

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Solution

The fourth proportional to 120,383.88, 180,591.18 and 45,549.96 is: 68,330.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,383.88 : 180,591.18 = 45,549.96 : x
  2. Step 2: Convert to fraction form
    120,383.88/180,591.18 = 45,549.96/x
  3. Step 3: Cross multiply
    120,383.88x = 180,591.18 × 45,549.96
  4. Step 4: Simplify right side
    120,383.88x = 8,225,921,025.35
  5. Step 5: Solve for x
    x = 8,225,921,025.35/120,383.88
  6. Step 6: Final answer
    x = 68,330.75

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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.