Home / 193,639.21-290,572.50-81,310.78

Finding the Fourth Proportional to 193,639.21, 290,572.50 and 81,310.78

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Solution

The fourth proportional to 193,639.21, 290,572.50 and 81,310.78 is: 122,013.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,639.21 : 290,572.50 = 81,310.78 : x
  2. Step 2: Convert to fraction form
    193,639.21/290,572.50 = 81,310.78/x
  3. Step 3: Cross multiply
    193,639.21x = 290,572.50 × 81,310.78
  4. Step 4: Simplify right side
    193,639.21x = 23,626,676,621.55
  5. Step 5: Solve for x
    x = 23,626,676,621.55/193,639.21
  6. Step 6: Final answer
    x = 122,013.91

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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.