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Finding the Fourth Proportional to 139,518.80, 209,268.60 and 44,747.60

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Solution

The fourth proportional to 139,518.80, 209,268.60 and 44,747.60 is: 67,118.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,518.80 : 209,268.60 = 44,747.60 : x
  2. Step 2: Convert to fraction form
    139,518.80/209,268.60 = 44,747.60/x
  3. Step 3: Cross multiply
    139,518.80x = 209,268.60 × 44,747.60
  4. Step 4: Simplify right side
    139,518.80x = 9,364,267,605.36
  5. Step 5: Solve for x
    x = 9,364,267,605.36/139,518.80
  6. Step 6: Final answer
    x = 67,118.32

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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.