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Finding the Fourth Proportional to 187,692.91, 281,580.90 and 103,409.67

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Solution

The fourth proportional to 187,692.91, 281,580.90 and 103,409.67 is: 155,137.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,692.91 : 281,580.90 = 103,409.67 : x
  2. Step 2: Convert to fraction form
    187,692.91/281,580.90 = 103,409.67/x
  3. Step 3: Cross multiply
    187,692.91x = 281,580.90 × 103,409.67
  4. Step 4: Simplify right side
    187,692.91x = 29,118,188,615.45
  5. Step 5: Solve for x
    x = 29,118,188,615.45/187,692.91
  6. Step 6: Final answer
    x = 155,137.39

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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.