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Finding the Fourth Proportional to 139,367.30, 209,050.95 and 50,623.70

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Solution

The fourth proportional to 139,367.30, 209,050.95 and 50,623.70 is: 75,935.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,367.30 : 209,050.95 = 50,623.70 : x
  2. Step 2: Convert to fraction form
    139,367.30/209,050.95 = 50,623.70/x
  3. Step 3: Cross multiply
    139,367.30x = 209,050.95 × 50,623.70
  4. Step 4: Simplify right side
    139,367.30x = 10,582,932,577.52
  5. Step 5: Solve for x
    x = 10,582,932,577.52/139,367.30
  6. Step 6: Final answer
    x = 75,935.55

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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.