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Finding the Fourth Proportional to 155,163.60, 232,788.60 and 76,280.40

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Solution

The fourth proportional to 155,163.60, 232,788.60 and 76,280.40 is: 114,441.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,163.60 : 232,788.60 = 76,280.40 : x
  2. Step 2: Convert to fraction form
    155,163.60/232,788.60 = 76,280.40/x
  3. Step 3: Cross multiply
    155,163.60x = 232,788.60 × 76,280.40
  4. Step 4: Simplify right side
    155,163.60x = 17,757,207,523.44
  5. Step 5: Solve for x
    x = 17,757,207,523.44/155,163.60
  6. Step 6: Final answer
    x = 114,441.84

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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.