Home / 138,906.52-191,687.07-81,544.92

Finding the Fourth Proportional to 138,906.52, 191,687.07 and 81,544.92

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Solution

The fourth proportional to 138,906.52, 191,687.07 and 81,544.92 is: 112,529.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,906.52 : 191,687.07 = 81,544.92 : x
  2. Step 2: Convert to fraction form
    138,906.52/191,687.07 = 81,544.92/x
  3. Step 3: Cross multiply
    138,906.52x = 191,687.07 × 81,544.92
  4. Step 4: Simplify right side
    138,906.52x = 15,631,106,788.18
  5. Step 5: Solve for x
    x = 15,631,106,788.18/138,906.52
  6. Step 6: Final answer
    x = 112,529.68

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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.