Home / 120,828.44-181,357.98-74,172.44

Finding the Fourth Proportional to 120,828.44, 181,357.98 and 74,172.44

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Solution

The fourth proportional to 120,828.44, 181,357.98 and 74,172.44 is: 111,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828.44 : 181,357.98 = 74,172.44 : x
  2. Step 2: Convert to fraction form
    120,828.44/181,357.98 = 74,172.44/x
  3. Step 3: Cross multiply
    120,828.44x = 181,357.98 × 74,172.44
  4. Step 4: Simplify right side
    120,828.44x = 13,451,763,890.07
  5. Step 5: Solve for x
    x = 13,451,763,890.07/120,828.44
  6. Step 6: Final answer
    x = 111,329.45

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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.