Home / 102,785.86-154,189.05-27,907.21

Finding the Fourth Proportional to 102,785.86, 154,189.05 and 27,907.21

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Solution

The fourth proportional to 102,785.86, 154,189.05 and 27,907.21 is: 41,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,785.86 : 154,189.05 = 27,907.21 : x
  2. Step 2: Convert to fraction form
    102,785.86/154,189.05 = 27,907.21/x
  3. Step 3: Cross multiply
    102,785.86x = 154,189.05 × 27,907.21
  4. Step 4: Simplify right side
    102,785.86x = 4,302,986,198.05
  5. Step 5: Solve for x
    x = 4,302,986,198.05/102,785.86
  6. Step 6: Final answer
    x = 41,863.60

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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.