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Finding the Fourth Proportional to 202,111.20, 303,239.70 and 83,818.80

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Solution

The fourth proportional to 202,111.20, 303,239.70 and 83,818.80 is: 125,758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,111.20 : 303,239.70 = 83,818.80 : x
  2. Step 2: Convert to fraction form
    202,111.20/303,239.70 = 83,818.80/x
  3. Step 3: Cross multiply
    202,111.20x = 303,239.70 × 83,818.80
  4. Step 4: Simplify right side
    202,111.20x = 25,417,187,766.36
  5. Step 5: Solve for x
    x = 25,417,187,766.36/202,111.20
  6. Step 6: Final answer
    x = 125,758.43

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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.