Home / 111,579.57-153,982.49-61,279.65

Finding the Fourth Proportional to 111,579.57, 153,982.49 and 61,279.65

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Solution

The fourth proportional to 111,579.57, 153,982.49 and 61,279.65 is: 84,567.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,579.57 : 153,982.49 = 61,279.65 : x
  2. Step 2: Convert to fraction form
    111,579.57/153,982.49 = 61,279.65/x
  3. Step 3: Cross multiply
    111,579.57x = 153,982.49 × 61,279.65
  4. Step 4: Simplify right side
    111,579.57x = 9,435,992,786.93
  5. Step 5: Solve for x
    x = 9,435,992,786.93/111,579.57
  6. Step 6: Final answer
    x = 84,567.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.