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Finding the Fourth Proportional to 139,203.91, 208,703.63 and 44,379.55

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Solution

The fourth proportional to 139,203.91, 208,703.63 and 44,379.55 is: 66,536.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,203.91 : 208,703.63 = 44,379.55 : x
  2. Step 2: Convert to fraction form
    139,203.91/208,703.63 = 44,379.55/x
  3. Step 3: Cross multiply
    139,203.91x = 208,703.63 × 44,379.55
  4. Step 4: Simplify right side
    139,203.91x = 9,262,172,960.87
  5. Step 5: Solve for x
    x = 9,262,172,960.87/139,203.91
  6. Step 6: Final answer
    x = 66,536.73

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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.