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Finding the Fourth Proportional to 139,352.78, 192,334.84 and 82,753.22

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Solution

The fourth proportional to 139,352.78, 192,334.84 and 82,753.22 is: 114,216.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,352.78 : 192,334.84 = 82,753.22 : x
  2. Step 2: Convert to fraction form
    139,352.78/192,334.84 = 82,753.22/x
  3. Step 3: Cross multiply
    139,352.78x = 192,334.84 × 82,753.22
  4. Step 4: Simplify right side
    139,352.78x = 15,916,327,328.18
  5. Step 5: Solve for x
    x = 15,916,327,328.18/139,352.78
  6. Step 6: Final answer
    x = 114,216.07

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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.