Home / 207,921.80-311,882.70-113,443.40

Finding the Fourth Proportional to 207,921.80, 311,882.70 and 113,443.40

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Solution

The fourth proportional to 207,921.80, 311,882.70 and 113,443.40 is: 170,165.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,921.80 : 311,882.70 = 113,443.40 : x
  2. Step 2: Convert to fraction form
    207,921.80/311,882.70 = 113,443.40/x
  3. Step 3: Cross multiply
    207,921.80x = 311,882.70 × 113,443.40
  4. Step 4: Simplify right side
    207,921.80x = 35,381,033,889.18
  5. Step 5: Solve for x
    x = 35,381,033,889.18/207,921.80
  6. Step 6: Final answer
    x = 170,165.10

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1.5x scale

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.