Home / 139,820.36-192,906.07-81,663.73

Finding the Fourth Proportional to 139,820.36, 192,906.07 and 81,663.73

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Solution

The fourth proportional to 139,820.36, 192,906.07 and 81,663.73 is: 112,669.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,820.36 : 192,906.07 = 81,663.73 : x
  2. Step 2: Convert to fraction form
    139,820.36/192,906.07 = 81,663.73/x
  3. Step 3: Cross multiply
    139,820.36x = 192,906.07 × 81,663.73
  4. Step 4: Simplify right side
    139,820.36x = 15,753,428,529.42
  5. Step 5: Solve for x
    x = 15,753,428,529.42/139,820.36
  6. Step 6: Final answer
    x = 112,669.06

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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.