Home / 139,619.95-207,850.79-138,789.58

Finding the Fourth Proportional to 139,619.95, 207,850.79 and 138,789.58

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Solution

The fourth proportional to 139,619.95, 207,850.79 and 138,789.58 is: 206,614.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,619.95 : 207,850.79 = 138,789.58 : x
  2. Step 2: Convert to fraction form
    139,619.95/207,850.79 = 138,789.58/x
  3. Step 3: Cross multiply
    139,619.95x = 207,850.79 × 138,789.58
  4. Step 4: Simplify right side
    139,619.95x = 28,847,523,846.77
  5. Step 5: Solve for x
    x = 28,847,523,846.77/139,619.95
  6. Step 6: Final answer
    x = 206,614.63

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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.