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Finding the Fourth Proportional to 188,751.57, 283,039.82 and 70,391.13

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Solution

The fourth proportional to 188,751.57, 283,039.82 and 70,391.13 is: 105,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,751.57 : 283,039.82 = 70,391.13 : x
  2. Step 2: Convert to fraction form
    188,751.57/283,039.82 = 70,391.13/x
  3. Step 3: Cross multiply
    188,751.57x = 283,039.82 × 70,391.13
  4. Step 4: Simplify right side
    188,751.57x = 19,923,491,615.41
  5. Step 5: Solve for x
    x = 19,923,491,615.41/188,751.57
  6. Step 6: Final answer
    x = 105,554.05

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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.