Home / 207,840.10-311,760.15-74,724.70

Finding the Fourth Proportional to 207,840.10, 311,760.15 and 74,724.70

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Solution

The fourth proportional to 207,840.10, 311,760.15 and 74,724.70 is: 112,087.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,840.10 : 311,760.15 = 74,724.70 : x
  2. Step 2: Convert to fraction form
    207,840.10/311,760.15 = 74,724.70/x
  3. Step 3: Cross multiply
    207,840.10x = 311,760.15 × 74,724.70
  4. Step 4: Simplify right side
    207,840.10x = 23,296,183,680.71
  5. Step 5: Solve for x
    x = 23,296,183,680.71/207,840.10
  6. Step 6: Final answer
    x = 112,087.05

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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.