Home / 120,974.40-181,267.20-101,145.60

Finding the Fourth Proportional to 120,974.40, 181,267.20 and 101,145.60

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Solution

The fourth proportional to 120,974.40, 181,267.20 and 101,145.60 is: 151,555.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,974.40 : 181,267.20 = 101,145.60 : x
  2. Step 2: Convert to fraction form
    120,974.40/181,267.20 = 101,145.60/x
  3. Step 3: Cross multiply
    120,974.40x = 181,267.20 × 101,145.60
  4. Step 4: Simplify right side
    120,974.40x = 18,334,379,704.32
  5. Step 5: Solve for x
    x = 18,334,379,704.32/120,974.40
  6. Step 6: Final answer
    x = 151,555.86

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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.