Home / 207,941.80-311,912.70-74,972.20

Finding the Fourth Proportional to 207,941.80, 311,912.70 and 74,972.20

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Solution

The fourth proportional to 207,941.80, 311,912.70 and 74,972.20 is: 112,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,941.80 : 311,912.70 = 74,972.20 : x
  2. Step 2: Convert to fraction form
    207,941.80/311,912.70 = 74,972.20/x
  3. Step 3: Cross multiply
    207,941.80x = 311,912.70 × 74,972.20
  4. Step 4: Simplify right side
    207,941.80x = 23,384,781,326.94
  5. Step 5: Solve for x
    x = 23,384,781,326.94/207,941.80
  6. Step 6: Final answer
    x = 112,458.30

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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.