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Finding the Fourth Proportional to 138,670.44, 208,036.98 and 43,906.38

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Solution

The fourth proportional to 138,670.44, 208,036.98 and 43,906.38 is: 65,869.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,670.44 : 208,036.98 = 43,906.38 : x
  2. Step 2: Convert to fraction form
    138,670.44/208,036.98 = 43,906.38/x
  3. Step 3: Cross multiply
    138,670.44x = 208,036.98 × 43,906.38
  4. Step 4: Simplify right side
    138,670.44x = 9,134,150,697.93
  5. Step 5: Solve for x
    x = 9,134,150,697.93/138,670.44
  6. Step 6: Final answer
    x = 65,869.49

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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.