Home / 138,972.85-208,457.75-33,791.92

Finding the Fourth Proportional to 138,972.85, 208,457.75 and 33,791.92

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Solution

The fourth proportional to 138,972.85, 208,457.75 and 33,791.92 is: 50,687.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,972.85 : 208,457.75 = 33,791.92 : x
  2. Step 2: Convert to fraction form
    138,972.85/208,457.75 = 33,791.92/x
  3. Step 3: Cross multiply
    138,972.85x = 208,457.75 × 33,791.92
  4. Step 4: Simplify right side
    138,972.85x = 7,044,187,174.72
  5. Step 5: Solve for x
    x = 7,044,187,174.72/138,972.85
  6. Step 6: Final answer
    x = 50,687.51

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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.