Home / 138,664.40-191,305.56-90,944.24

Finding the Fourth Proportional to 138,664.40, 191,305.56 and 90,944.24

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Solution

The fourth proportional to 138,664.40, 191,305.56 and 90,944.24 is: 125,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,664.40 : 191,305.56 = 90,944.24 : x
  2. Step 2: Convert to fraction form
    138,664.40/191,305.56 = 90,944.24/x
  3. Step 3: Cross multiply
    138,664.40x = 191,305.56 × 90,944.24
  4. Step 4: Simplify right side
    138,664.40x = 17,398,138,761.97
  5. Step 5: Solve for x
    x = 17,398,138,761.97/138,664.40
  6. Step 6: Final answer
    x = 125,469.40

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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.