Home / 207,983.40-311,975.10-102,818.60

Finding the Fourth Proportional to 207,983.40, 311,975.10 and 102,818.60

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Solution

The fourth proportional to 207,983.40, 311,975.10 and 102,818.60 is: 154,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,983.40 : 311,975.10 = 102,818.60 : x
  2. Step 2: Convert to fraction form
    207,983.40/311,975.10 = 102,818.60/x
  3. Step 3: Cross multiply
    207,983.40x = 311,975.10 × 102,818.60
  4. Step 4: Simplify right side
    207,983.40x = 32,076,843,016.86
  5. Step 5: Solve for x
    x = 32,076,843,016.86/207,983.40
  6. Step 6: Final answer
    x = 154,227.90

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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.