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Finding the Fourth Proportional to 139,278.84, 208,915.88 and 44,508.33

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Solution

The fourth proportional to 139,278.84, 208,915.88 and 44,508.33 is: 66,761.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,278.84 : 208,915.88 = 44,508.33 : x
  2. Step 2: Convert to fraction form
    139,278.84/208,915.88 = 44,508.33/x
  3. Step 3: Cross multiply
    139,278.84x = 208,915.88 × 44,508.33
  4. Step 4: Simplify right side
    139,278.84x = 9,298,496,706.74
  5. Step 5: Solve for x
    x = 9,298,496,706.74/139,278.84
  6. Step 6: Final answer
    x = 66,761.73

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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.