Home / 205,979.84-309,086.64-111,208.76

Finding the Fourth Proportional to 205,979.84, 309,086.64 and 111,208.76

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Solution

The fourth proportional to 205,979.84, 309,086.64 and 111,208.76 is: 166,876.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,979.84 : 309,086.64 = 111,208.76 : x
  2. Step 2: Convert to fraction form
    205,979.84/309,086.64 = 111,208.76/x
  3. Step 3: Cross multiply
    205,979.84x = 309,086.64 × 111,208.76
  4. Step 4: Simplify right side
    205,979.84x = 34,373,141,966.97
  5. Step 5: Solve for x
    x = 34,373,141,966.97/205,979.84
  6. Step 6: Final answer
    x = 166,876.24

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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.