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Finding the Fourth Proportional to 139,376.22, 209,078.11 and 44,582.60

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Solution

The fourth proportional to 139,376.22, 209,078.11 and 44,582.60 is: 66,878.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,376.22 : 209,078.11 = 44,582.60 : x
  2. Step 2: Convert to fraction form
    139,376.22/209,078.11 = 44,582.60/x
  3. Step 3: Cross multiply
    139,376.22x = 209,078.11 × 44,582.60
  4. Step 4: Simplify right side
    139,376.22x = 9,321,246,325.31
  5. Step 5: Solve for x
    x = 9,321,246,325.31/139,376.22
  6. Step 6: Final answer
    x = 66,878.31

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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.