Home / 207,979.40-311,969.09-67,738.02

Finding the Fourth Proportional to 207,979.40, 311,969.09 and 67,738.02

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Solution

The fourth proportional to 207,979.40, 311,969.09 and 67,738.02 is: 101,607.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,979.40 : 311,969.09 = 67,738.02 : x
  2. Step 2: Convert to fraction form
    207,979.40/311,969.09 = 67,738.02/x
  3. Step 3: Cross multiply
    207,979.40x = 311,969.09 × 67,738.02
  4. Step 4: Simplify right side
    207,979.40x = 21,132,168,119.11
  5. Step 5: Solve for x
    x = 21,132,168,119.11/207,979.40
  6. Step 6: Final answer
    x = 101,607.03

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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.