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Finding the Fourth Proportional to 199,418.72, 298,922.88 and 87,077.93

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Solution

The fourth proportional to 199,418.72, 298,922.88 and 87,077.93 is: 130,527.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,418.72 : 298,922.88 = 87,077.93 : x
  2. Step 2: Convert to fraction form
    199,418.72/298,922.88 = 87,077.93/x
  3. Step 3: Cross multiply
    199,418.72x = 298,922.88 × 87,077.93
  4. Step 4: Simplify right side
    199,418.72x = 26,029,585,620.04
  5. Step 5: Solve for x
    x = 26,029,585,620.04/199,418.72
  6. Step 6: Final answer
    x = 130,527.29

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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.