Home / 205,986.10-308,979.15-65,749.30

Finding the Fourth Proportional to 205,986.10, 308,979.15 and 65,749.30

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Solution

The fourth proportional to 205,986.10, 308,979.15 and 65,749.30 is: 98,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,986.10 : 308,979.15 = 65,749.30 : x
  2. Step 2: Convert to fraction form
    205,986.10/308,979.15 = 65,749.30/x
  3. Step 3: Cross multiply
    205,986.10x = 308,979.15 × 65,749.30
  4. Step 4: Simplify right side
    205,986.10x = 20,315,162,827.10
  5. Step 5: Solve for x
    x = 20,315,162,827.10/205,986.10
  6. Step 6: Final answer
    x = 98,623.95

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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.