Home / 756,759.12-1,135,105.88-188,128.32

Finding the Fourth Proportional to 756,759.12, 1,135,105.88 and 188,128.32

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Solution

The fourth proportional to 756,759.12, 1,135,105.88 and 188,128.32 is: 282,184.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,759.12 : 1,135,105.88 = 188,128.32 : x
  2. Step 2: Convert to fraction form
    756,759.12/1,135,105.88 = 188,128.32/x
  3. Step 3: Cross multiply
    756,759.12x = 1,135,105.88 × 188,128.32
  4. Step 4: Simplify right side
    756,759.12x = 213,545,561,285.88
  5. Step 5: Solve for x
    x = 213,545,561,285.88/756,759.12
  6. Step 6: Final answer
    x = 282,184.32

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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.