Home / 207,389.45-311,133.38-67,148.07

Finding the Fourth Proportional to 207,389.45, 311,133.38 and 67,148.07

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Solution

The fourth proportional to 207,389.45, 311,133.38 and 67,148.07 is: 100,738.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,389.45 : 311,133.38 = 67,148.07 : x
  2. Step 2: Convert to fraction form
    207,389.45/311,133.38 = 67,148.07/x
  3. Step 3: Cross multiply
    207,389.45x = 311,133.38 × 67,148.07
  4. Step 4: Simplify right side
    207,389.45x = 20,892,005,979.58
  5. Step 5: Solve for x
    x = 20,892,005,979.58/207,389.45
  6. Step 6: Final answer
    x = 100,738.04

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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.