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Finding the Fourth Proportional to 202,161.90, 303,242.85 and 131,303.10

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Solution

The fourth proportional to 202,161.90, 303,242.85 and 131,303.10 is: 196,954.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,161.90 : 303,242.85 = 131,303.10 : x
  2. Step 2: Convert to fraction form
    202,161.90/303,242.85 = 131,303.10/x
  3. Step 3: Cross multiply
    202,161.90x = 303,242.85 × 131,303.10
  4. Step 4: Simplify right side
    202,161.90x = 39,816,726,257.84
  5. Step 5: Solve for x
    x = 39,816,726,257.84/202,161.90
  6. Step 6: Final answer
    x = 196,954.65

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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.