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Finding the Fourth Proportional to 202,079.50, 303,163.02 and 77,420.50

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Solution

The fourth proportional to 202,079.50, 303,163.02 and 77,420.50 is: 116,147.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,079.50 : 303,163.02 = 77,420.50 : x
  2. Step 2: Convert to fraction form
    202,079.50/303,163.02 = 77,420.50/x
  3. Step 3: Cross multiply
    202,079.50x = 303,163.02 × 77,420.50
  4. Step 4: Simplify right side
    202,079.50x = 23,471,032,589.91
  5. Step 5: Solve for x
    x = 23,471,032,589.91/202,079.50
  6. Step 6: Final answer
    x = 116,147.52

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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.