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Finding the Fourth Proportional to 139,027.41, 208,552.05 and 54,781.74

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Solution

The fourth proportional to 139,027.41, 208,552.05 and 54,781.74 is: 82,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,027.41 : 208,552.05 = 54,781.74 : x
  2. Step 2: Convert to fraction form
    139,027.41/208,552.05 = 54,781.74/x
  3. Step 3: Cross multiply
    139,027.41x = 208,552.05 × 54,781.74
  4. Step 4: Simplify right side
    139,027.41x = 11,424,844,179.57
  5. Step 5: Solve for x
    x = 11,424,844,179.57/139,027.41
  6. Step 6: Final answer
    x = 82,176.92

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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.