Home / 139,816.41-192,960.05-86,132.85

Finding the Fourth Proportional to 139,816.41, 192,960.05 and 86,132.85

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Solution

The fourth proportional to 139,816.41, 192,960.05 and 86,132.85 is: 118,871.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,816.41 : 192,960.05 = 86,132.85 : x
  2. Step 2: Convert to fraction form
    139,816.41/192,960.05 = 86,132.85/x
  3. Step 3: Cross multiply
    139,816.41x = 192,960.05 × 86,132.85
  4. Step 4: Simplify right side
    139,816.41x = 16,620,199,042.64
  5. Step 5: Solve for x
    x = 16,620,199,042.64/139,816.41
  6. Step 6: Final answer
    x = 118,871.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.