Home / 138,754.06-191,480.59-75,091.87

Finding the Fourth Proportional to 138,754.06, 191,480.59 and 75,091.87

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Solution

The fourth proportional to 138,754.06, 191,480.59 and 75,091.87 is: 103,626.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,754.06 : 191,480.59 = 75,091.87 : x
  2. Step 2: Convert to fraction form
    138,754.06/191,480.59 = 75,091.87/x
  3. Step 3: Cross multiply
    138,754.06x = 191,480.59 × 75,091.87
  4. Step 4: Simplify right side
    138,754.06x = 14,378,635,571.80
  5. Step 5: Solve for x
    x = 14,378,635,571.80/138,754.06
  6. Step 6: Final answer
    x = 103,626.77

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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.