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Finding the Fourth Proportional to 185,450.88, 278,173.44 and 74,640

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Solution

The fourth proportional to 185,450.88, 278,173.44 and 74,640 is: 111,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,450.88 : 278,173.44 = 74,640 : x
  2. Step 2: Convert to fraction form
    185,450.88/278,173.44 = 74,640/x
  3. Step 3: Cross multiply
    185,450.88x = 278,173.44 × 74,640
  4. Step 4: Simplify right side
    185,450.88x = 20,762,865,561.60
  5. Step 5: Solve for x
    x = 20,762,865,561.60/185,450.88
  6. Step 6: Final answer
    x = 111,958.84

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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.