Home / 166,075.20-248,942.70-81,705.60

Finding the Fourth Proportional to 166,075.20, 248,942.70 and 81,705.60

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Solution

The fourth proportional to 166,075.20, 248,942.70 and 81,705.60 is: 122,474.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,075.20 : 248,942.70 = 81,705.60 : x
  2. Step 2: Convert to fraction form
    166,075.20/248,942.70 = 81,705.60/x
  3. Step 3: Cross multiply
    166,075.20x = 248,942.70 × 81,705.60
  4. Step 4: Simplify right side
    166,075.20x = 20,340,012,669.12
  5. Step 5: Solve for x
    x = 20,340,012,669.12/166,075.20
  6. Step 6: Final answer
    x = 122,474.71

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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.