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Finding the Fourth Proportional to 190,262.88, 285,173.28 and 71,858.88

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Solution

The fourth proportional to 190,262.88, 285,173.28 and 71,858.88 is: 107,704.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,262.88 : 285,173.28 = 71,858.88 : x
  2. Step 2: Convert to fraction form
    190,262.88/285,173.28 = 71,858.88/x
  3. Step 3: Cross multiply
    190,262.88x = 285,173.28 × 71,858.88
  4. Step 4: Simplify right side
    190,262.88x = 20,492,232,506.73
  5. Step 5: Solve for x
    x = 20,492,232,506.73/190,262.88
  6. Step 6: Final answer
    x = 107,704.84

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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.