Home / 138,964.81-208,726.16-82,914.30

Finding the Fourth Proportional to 138,964.81, 208,726.16 and 82,914.30

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Solution

The fourth proportional to 138,964.81, 208,726.16 and 82,914.30 is: 124,537.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,964.81 : 208,726.16 = 82,914.30 : x
  2. Step 2: Convert to fraction form
    138,964.81/208,726.16 = 82,914.30/x
  3. Step 3: Cross multiply
    138,964.81x = 208,726.16 × 82,914.30
  4. Step 4: Simplify right side
    138,964.81x = 17,306,383,448.09
  5. Step 5: Solve for x
    x = 17,306,383,448.09/138,964.81
  6. Step 6: Final answer
    x = 124,537.88

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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.