Home / 170,715.20-256,072.80-81,947.30

Finding the Fourth Proportional to 170,715.20, 256,072.80 and 81,947.30

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Solution

The fourth proportional to 170,715.20, 256,072.80 and 81,947.30 is: 122,920.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,715.20 : 256,072.80 = 81,947.30 : x
  2. Step 2: Convert to fraction form
    170,715.20/256,072.80 = 81,947.30/x
  3. Step 3: Cross multiply
    170,715.20x = 256,072.80 × 81,947.30
  4. Step 4: Simplify right side
    170,715.20x = 20,984,474,563.44
  5. Step 5: Solve for x
    x = 20,984,474,563.44/170,715.20
  6. Step 6: Final answer
    x = 122,920.95

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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.