Home / 188,423.20-282,197.40-128,936.80

Finding the Fourth Proportional to 188,423.20, 282,197.40 and 128,936.80

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Solution

The fourth proportional to 188,423.20, 282,197.40 and 128,936.80 is: 193,105.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,423.20 : 282,197.40 = 128,936.80 : x
  2. Step 2: Convert to fraction form
    188,423.20/282,197.40 = 128,936.80/x
  3. Step 3: Cross multiply
    188,423.20x = 282,197.40 × 128,936.80
  4. Step 4: Simplify right side
    188,423.20x = 36,385,629,724.32
  5. Step 5: Solve for x
    x = 36,385,629,724.32/188,423.20
  6. Step 6: Final answer
    x = 193,105.89

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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.