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Finding the Fourth Proportional to 139,203.54, 192,101.39 and 75,541.32

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Solution

The fourth proportional to 139,203.54, 192,101.39 and 75,541.32 is: 104,247.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,203.54 : 192,101.39 = 75,541.32 : x
  2. Step 2: Convert to fraction form
    139,203.54/192,101.39 = 75,541.32/x
  3. Step 3: Cross multiply
    139,203.54x = 192,101.39 × 75,541.32
  4. Step 4: Simplify right side
    139,203.54x = 14,511,592,196.73
  5. Step 5: Solve for x
    x = 14,511,592,196.73/139,203.54
  6. Step 6: Final answer
    x = 104,247.29

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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.