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Finding the Fourth Proportional to 139,194, 208,688.76 and 44,369.60

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Solution

The fourth proportional to 139,194, 208,688.76 and 44,369.60 is: 66,521.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,194 : 208,688.76 = 44,369.60 : x
  2. Step 2: Convert to fraction form
    139,194/208,688.76 = 44,369.60/x
  3. Step 3: Cross multiply
    139,194x = 208,688.76 × 44,369.60
  4. Step 4: Simplify right side
    139,194x = 9,259,436,805.70
  5. Step 5: Solve for x
    x = 9,259,436,805.70/139,194
  6. Step 6: Final answer
    x = 66,521.81

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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.