Home / 85,141.24-127,515.03-82,188.79

Finding the Fourth Proportional to 85,141.24, 127,515.03 and 82,188.79

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Solution

The fourth proportional to 85,141.24, 127,515.03 and 82,188.79 is: 123,093.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,141.24 : 127,515.03 = 82,188.79 : x
  2. Step 2: Convert to fraction form
    85,141.24/127,515.03 = 82,188.79/x
  3. Step 3: Cross multiply
    85,141.24x = 127,515.03 × 82,188.79
  4. Step 4: Simplify right side
    85,141.24x = 10,480,306,022.51
  5. Step 5: Solve for x
    x = 10,480,306,022.51/85,141.24
  6. Step 6: Final answer
    x = 123,093.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.