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Finding the Fourth Proportional to 120,835.44, 181,368.48 and 74,179.44

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Solution

The fourth proportional to 120,835.44, 181,368.48 and 74,179.44 is: 111,339.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,835.44 : 181,368.48 = 74,179.44 : x
  2. Step 2: Convert to fraction form
    120,835.44/181,368.48 = 74,179.44/x
  3. Step 3: Cross multiply
    120,835.44x = 181,368.48 × 74,179.44
  4. Step 4: Simplify right side
    120,835.44x = 13,453,812,280.05
  5. Step 5: Solve for x
    x = 13,453,812,280.05/120,835.44
  6. Step 6: Final answer
    x = 111,339.95

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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.