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Finding the Fourth Proportional to 136,055.80, 204,083.70 and 79,922.80

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Solution

The fourth proportional to 136,055.80, 204,083.70 and 79,922.80 is: 119,884.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,055.80 : 204,083.70 = 79,922.80 : x
  2. Step 2: Convert to fraction form
    136,055.80/204,083.70 = 79,922.80/x
  3. Step 3: Cross multiply
    136,055.80x = 204,083.70 × 79,922.80
  4. Step 4: Simplify right side
    136,055.80x = 16,310,940,738.36
  5. Step 5: Solve for x
    x = 16,310,940,738.36/136,055.80
  6. Step 6: Final answer
    x = 119,884.20

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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.