Home / 207,844.20-311,996.70-129,047.40

Finding the Fourth Proportional to 207,844.20, 311,996.70 and 129,047.40

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Solution

The fourth proportional to 207,844.20, 311,996.70 and 129,047.40 is: 193,714.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,844.20 : 311,996.70 = 129,047.40 : x
  2. Step 2: Convert to fraction form
    207,844.20/311,996.70 = 129,047.40/x
  3. Step 3: Cross multiply
    207,844.20x = 311,996.70 × 129,047.40
  4. Step 4: Simplify right side
    207,844.20x = 40,262,362,943.58
  5. Step 5: Solve for x
    x = 40,262,362,943.58/207,844.20
  6. Step 6: Final answer
    x = 193,714.15

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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.