Home / 138,754.13-191,480.69-75,091.92

Finding the Fourth Proportional to 138,754.13, 191,480.69 and 75,091.92

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Solution

The fourth proportional to 138,754.13, 191,480.69 and 75,091.92 is: 103,626.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,754.13 : 191,480.69 = 75,091.92 : x
  2. Step 2: Convert to fraction form
    138,754.13/191,480.69 = 75,091.92/x
  3. Step 3: Cross multiply
    138,754.13x = 191,480.69 × 75,091.92
  4. Step 4: Simplify right side
    138,754.13x = 14,378,652,655.02
  5. Step 5: Solve for x
    x = 14,378,652,655.02/138,754.13
  6. Step 6: Final answer
    x = 103,626.84

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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.