Home / 139,621.45-207,853.02-138,791.08

Finding the Fourth Proportional to 139,621.45, 207,853.02 and 138,791.08

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Solution

The fourth proportional to 139,621.45, 207,853.02 and 138,791.08 is: 206,616.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,621.45 : 207,853.02 = 138,791.08 : x
  2. Step 2: Convert to fraction form
    139,621.45/207,853.02 = 138,791.08/x
  3. Step 3: Cross multiply
    139,621.45x = 207,853.02 × 138,791.08
  4. Step 4: Simplify right side
    139,621.45x = 28,848,145,127.06
  5. Step 5: Solve for x
    x = 28,848,145,127.06/139,621.45
  6. Step 6: Final answer
    x = 206,616.86

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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.