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Finding the Fourth Proportional to 138,990.96, 208,504.13 and 37,791.14

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Solution

The fourth proportional to 138,990.96, 208,504.13 and 37,791.14 is: 56,691.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,990.96 : 208,504.13 = 37,791.14 : x
  2. Step 2: Convert to fraction form
    138,990.96/208,504.13 = 37,791.14/x
  3. Step 3: Cross multiply
    138,990.96x = 208,504.13 × 37,791.14
  4. Step 4: Simplify right side
    138,990.96x = 7,879,607,535.93
  5. Step 5: Solve for x
    x = 7,879,607,535.93/138,990.96
  6. Step 6: Final answer
    x = 56,691.51

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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.