Home / 138,971.96-208,455.06-33,791.48

Finding the Fourth Proportional to 138,971.96, 208,455.06 and 33,791.48

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Solution

The fourth proportional to 138,971.96, 208,455.06 and 33,791.48 is: 50,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,971.96 : 208,455.06 = 33,791.48 : x
  2. Step 2: Convert to fraction form
    138,971.96/208,455.06 = 33,791.48/x
  3. Step 3: Cross multiply
    138,971.96x = 208,455.06 × 33,791.48
  4. Step 4: Simplify right side
    138,971.96x = 7,044,004,990.89
  5. Step 5: Solve for x
    x = 7,044,004,990.89/138,971.96
  6. Step 6: Final answer
    x = 50,686.52

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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.