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Finding the Fourth Proportional to 199,008.94, 298,512.73 and 80,680

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Solution

The fourth proportional to 199,008.94, 298,512.73 and 80,680 is: 121,019.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,008.94 : 298,512.73 = 80,680 : x
  2. Step 2: Convert to fraction form
    199,008.94/298,512.73 = 80,680/x
  3. Step 3: Cross multiply
    199,008.94x = 298,512.73 × 80,680
  4. Step 4: Simplify right side
    199,008.94x = 24,084,007,056.40
  5. Step 5: Solve for x
    x = 24,084,007,056.40/199,008.94
  6. Step 6: Final answer
    x = 121,019.72

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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.