Home / 138,726.24-207,936.72-54,461.04

Finding the Fourth Proportional to 138,726.24, 207,936.72 and 54,461.04

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Solution

The fourth proportional to 138,726.24, 207,936.72 and 54,461.04 is: 81,631.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,726.24 : 207,936.72 = 54,461.04 : x
  2. Step 2: Convert to fraction form
    138,726.24/207,936.72 = 54,461.04/x
  3. Step 3: Cross multiply
    138,726.24x = 207,936.72 × 54,461.04
  4. Step 4: Simplify right side
    138,726.24x = 11,324,450,025.39
  5. Step 5: Solve for x
    x = 11,324,450,025.39/138,726.24
  6. Step 6: Final answer
    x = 81,631.64

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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.