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Finding the Fourth Proportional to 202,123.80, 303,185.70 and 68,959.80

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Solution

The fourth proportional to 202,123.80, 303,185.70 and 68,959.80 is: 103,439.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,123.80 : 303,185.70 = 68,959.80 : x
  2. Step 2: Convert to fraction form
    202,123.80/303,185.70 = 68,959.80/x
  3. Step 3: Cross multiply
    202,123.80x = 303,185.70 × 68,959.80
  4. Step 4: Simplify right side
    202,123.80x = 20,907,625,234.86
  5. Step 5: Solve for x
    x = 20,907,625,234.86/202,123.80
  6. Step 6: Final answer
    x = 103,439.70

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1.5x scale

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.