Home / 199,359.28-298,964.40-80,990.74

Finding the Fourth Proportional to 199,359.28, 298,964.40 and 80,990.74

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Solution

The fourth proportional to 199,359.28, 298,964.40 and 80,990.74 is: 121,455.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,359.28 : 298,964.40 = 80,990.74 : x
  2. Step 2: Convert to fraction form
    199,359.28/298,964.40 = 80,990.74/x
  3. Step 3: Cross multiply
    199,359.28x = 298,964.40 × 80,990.74
  4. Step 4: Simplify right side
    199,359.28x = 24,213,347,989.66
  5. Step 5: Solve for x
    x = 24,213,347,989.66/199,359.28
  6. Step 6: Final answer
    x = 121,455.84

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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.