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Finding the Fourth Proportional to 120,814.60, 181,043.70 and 87,604.60

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Solution

The fourth proportional to 120,814.60, 181,043.70 and 87,604.60 is: 131,277.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,814.60 : 181,043.70 = 87,604.60 : x
  2. Step 2: Convert to fraction form
    120,814.60/181,043.70 = 87,604.60/x
  3. Step 3: Cross multiply
    120,814.60x = 181,043.70 × 87,604.60
  4. Step 4: Simplify right side
    120,814.60x = 15,860,260,921.02
  5. Step 5: Solve for x
    x = 15,860,260,921.02/120,814.60
  6. Step 6: Final answer
    x = 131,277.68

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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.