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Finding the Fourth Proportional to 155,428.21, 232,837.22 and 80,597.27

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Solution

The fourth proportional to 155,428.21, 232,837.22 and 80,597.27 is: 120,737.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,428.21 : 232,837.22 = 80,597.27 : x
  2. Step 2: Convert to fraction form
    155,428.21/232,837.22 = 80,597.27/x
  3. Step 3: Cross multiply
    155,428.21x = 232,837.22 × 80,597.27
  4. Step 4: Simplify right side
    155,428.21x = 18,766,043,122.20
  5. Step 5: Solve for x
    x = 18,766,043,122.20/155,428.21
  6. Step 6: Final answer
    x = 120,737.69

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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.