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Finding the Fourth Proportional to 139,375.92, 192,339.32 and 82,017.48

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Solution

The fourth proportional to 139,375.92, 192,339.32 and 82,017.48 is: 113,184.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,375.92 : 192,339.32 = 82,017.48 : x
  2. Step 2: Convert to fraction form
    139,375.92/192,339.32 = 82,017.48/x
  3. Step 3: Cross multiply
    139,375.92x = 192,339.32 × 82,017.48
  4. Step 4: Simplify right side
    139,375.92x = 15,775,186,331.31
  5. Step 5: Solve for x
    x = 15,775,186,331.31/139,375.92
  6. Step 6: Final answer
    x = 113,184.45

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1.5x scale

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.