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Finding the Fourth Proportional to 139,145.58, 208,734.77 and 44,342.78

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Solution

The fourth proportional to 139,145.58, 208,734.77 and 44,342.78 is: 66,519.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,145.58 : 208,734.77 = 44,342.78 : x
  2. Step 2: Convert to fraction form
    139,145.58/208,734.77 = 44,342.78/x
  3. Step 3: Cross multiply
    139,145.58x = 208,734.77 × 44,342.78
  4. Step 4: Simplify right side
    139,145.58x = 9,255,879,051.64
  5. Step 5: Solve for x
    x = 9,255,879,051.64/139,145.58
  6. Step 6: Final answer
    x = 66,519.39

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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.