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Finding the Fourth Proportional to 138,791.66, 208,097.27 and 54,560.06

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Solution

The fourth proportional to 138,791.66, 208,097.27 and 54,560.06 is: 81,804.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,791.66 : 208,097.27 = 54,560.06 : x
  2. Step 2: Convert to fraction form
    138,791.66/208,097.27 = 54,560.06/x
  3. Step 3: Cross multiply
    138,791.66x = 208,097.27 × 54,560.06
  4. Step 4: Simplify right side
    138,791.66x = 11,353,799,264.24
  5. Step 5: Solve for x
    x = 11,353,799,264.24/138,791.66
  6. Step 6: Final answer
    x = 81,804.62

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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.