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Finding the Fourth Proportional to 187,374.40, 281,191.20 and 134,821.60

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Solution

The fourth proportional to 187,374.40, 281,191.20 and 134,821.60 is: 202,325.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,374.40 : 281,191.20 = 134,821.60 : x
  2. Step 2: Convert to fraction form
    187,374.40/281,191.20 = 134,821.60/x
  3. Step 3: Cross multiply
    187,374.40x = 281,191.20 × 134,821.60
  4. Step 4: Simplify right side
    187,374.40x = 37,910,647,489.92
  5. Step 5: Solve for x
    x = 37,910,647,489.92/187,374.40
  6. Step 6: Final answer
    x = 202,325.65

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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.