Home / 138,716.16-191,426.94-75,052.56

Finding the Fourth Proportional to 138,716.16, 191,426.94 and 75,052.56

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Solution

The fourth proportional to 138,716.16, 191,426.94 and 75,052.56 is: 103,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,716.16 : 191,426.94 = 75,052.56 : x
  2. Step 2: Convert to fraction form
    138,716.16/191,426.94 = 75,052.56/x
  3. Step 3: Cross multiply
    138,716.16x = 191,426.94 × 75,052.56
  4. Step 4: Simplify right side
    138,716.16x = 14,367,081,899.97
  5. Step 5: Solve for x
    x = 14,367,081,899.97/138,716.16
  6. Step 6: Final answer
    x = 103,571.80

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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.