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Finding the Fourth Proportional to 202,129.55, 303,151.80 and 102,195.80

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Solution

The fourth proportional to 202,129.55, 303,151.80 and 102,195.80 is: 153,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,129.55 : 303,151.80 = 102,195.80 : x
  2. Step 2: Convert to fraction form
    202,129.55/303,151.80 = 102,195.80/x
  3. Step 3: Cross multiply
    202,129.55x = 303,151.80 × 102,195.80
  4. Step 4: Simplify right side
    202,129.55x = 30,980,840,722.44
  5. Step 5: Solve for x
    x = 30,980,840,722.44/202,129.55
  6. Step 6: Final answer
    x = 153,272.20

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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.