Home / 198,865.28-298,119.84-72,416.32

Finding the Fourth Proportional to 198,865.28, 298,119.84 and 72,416.32

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Solution

The fourth proportional to 198,865.28, 298,119.84 and 72,416.32 is: 108,559.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,865.28 : 298,119.84 = 72,416.32 : x
  2. Step 2: Convert to fraction form
    198,865.28/298,119.84 = 72,416.32/x
  3. Step 3: Cross multiply
    198,865.28x = 298,119.84 × 72,416.32
  4. Step 4: Simplify right side
    198,865.28x = 21,588,741,731.79
  5. Step 5: Solve for x
    x = 21,588,741,731.79/198,865.28
  6. Step 6: Final answer
    x = 108,559.63

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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.