Home / 139,621.95-207,853.77-138,791.58

Finding the Fourth Proportional to 139,621.95, 207,853.77 and 138,791.58

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Solution

The fourth proportional to 139,621.95, 207,853.77 and 138,791.58 is: 206,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,621.95 : 207,853.77 = 138,791.58 : x
  2. Step 2: Convert to fraction form
    139,621.95/207,853.77 = 138,791.58/x
  3. Step 3: Cross multiply
    139,621.95x = 207,853.77 × 138,791.58
  4. Step 4: Simplify right side
    139,621.95x = 28,848,353,147.26
  5. Step 5: Solve for x
    x = 28,848,353,147.26/139,621.95
  6. Step 6: Final answer
    x = 206,617.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.