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Finding the Fourth Proportional to 139,838.32, 209,617.03 and 44,998.80

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Solution

The fourth proportional to 139,838.32, 209,617.03 and 44,998.80 is: 67,453.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,838.32 : 209,617.03 = 44,998.80 : x
  2. Step 2: Convert to fraction form
    139,838.32/209,617.03 = 44,998.80/x
  3. Step 3: Cross multiply
    139,838.32x = 209,617.03 × 44,998.80
  4. Step 4: Simplify right side
    139,838.32x = 9,432,515,651.88
  5. Step 5: Solve for x
    x = 9,432,515,651.88/139,838.32
  6. Step 6: Final answer
    x = 67,453.01

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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.