Home / 193,639.86-290,573.48-81,311.44

Finding the Fourth Proportional to 193,639.86, 290,573.48 and 81,311.44

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Solution

The fourth proportional to 193,639.86, 290,573.48 and 81,311.44 is: 122,014.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,639.86 : 290,573.48 = 81,311.44 : x
  2. Step 2: Convert to fraction form
    193,639.86/290,573.48 = 81,311.44/x
  3. Step 3: Cross multiply
    193,639.86x = 290,573.48 × 81,311.44
  4. Step 4: Simplify right side
    193,639.86x = 23,626,948,084.61
  5. Step 5: Solve for x
    x = 23,626,948,084.61/193,639.86
  6. Step 6: Final answer
    x = 122,014.90

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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.