Home / 198,728.64-298,170.72-74,040.48

Finding the Fourth Proportional to 198,728.64, 298,170.72 and 74,040.48

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Solution

The fourth proportional to 198,728.64, 298,170.72 and 74,040.48 is: 111,089.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,728.64 : 298,170.72 = 74,040.48 : x
  2. Step 2: Convert to fraction form
    198,728.64/298,170.72 = 74,040.48/x
  3. Step 3: Cross multiply
    198,728.64x = 298,170.72 × 74,040.48
  4. Step 4: Simplify right side
    198,728.64x = 22,076,703,230.75
  5. Step 5: Solve for x
    x = 22,076,703,230.75/198,728.64
  6. Step 6: Final answer
    x = 111,089.69

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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.