Home / 205,979.10-308,579.85-105,798.30

Finding the Fourth Proportional to 205,979.10, 308,579.85 and 105,798.30

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Solution

The fourth proportional to 205,979.10, 308,579.85 and 105,798.30 is: 158,497.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,979.10 : 308,579.85 = 105,798.30 : x
  2. Step 2: Convert to fraction form
    205,979.10/308,579.85 = 105,798.30/x
  3. Step 3: Cross multiply
    205,979.10x = 308,579.85 × 105,798.30
  4. Step 4: Simplify right side
    205,979.10x = 32,647,223,544.26
  5. Step 5: Solve for x
    x = 32,647,223,544.26/205,979.10
  6. Step 6: Final answer
    x = 158,497.75

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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.