Home / 139,431.06-192,442.80-82,831.50

Finding the Fourth Proportional to 139,431.06, 192,442.80 and 82,831.50

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Solution

The fourth proportional to 139,431.06, 192,442.80 and 82,831.50 is: 114,324.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,431.06 : 192,442.80 = 82,831.50 : x
  2. Step 2: Convert to fraction form
    139,431.06/192,442.80 = 82,831.50/x
  3. Step 3: Cross multiply
    139,431.06x = 192,442.80 × 82,831.50
  4. Step 4: Simplify right side
    139,431.06x = 15,940,325,788.20
  5. Step 5: Solve for x
    x = 15,940,325,788.20/139,431.06
  6. Step 6: Final answer
    x = 114,324.07

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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.