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Finding the Fourth Proportional to 155,263.97, 232,729.83 and 80,308.64

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Solution

The fourth proportional to 155,263.97, 232,729.83 and 80,308.64 is: 120,377.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,263.97 : 232,729.83 = 80,308.64 : x
  2. Step 2: Convert to fraction form
    155,263.97/232,729.83 = 80,308.64/x
  3. Step 3: Cross multiply
    155,263.97x = 232,729.83 × 80,308.64
  4. Step 4: Simplify right side
    155,263.97x = 18,690,216,134.73
  5. Step 5: Solve for x
    x = 18,690,216,134.73/155,263.97
  6. Step 6: Final answer
    x = 120,377.03

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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.