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Finding the Fourth Proportional to 187,630.63, 281,360.74 and 80,964.03

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Solution

The fourth proportional to 187,630.63, 281,360.74 and 80,964.03 is: 121,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,630.63 : 281,360.74 = 80,964.03 : x
  2. Step 2: Convert to fraction form
    187,630.63/281,360.74 = 80,964.03/x
  3. Step 3: Cross multiply
    187,630.63x = 281,360.74 × 80,964.03
  4. Step 4: Simplify right side
    187,630.63x = 22,780,099,607.36
  5. Step 5: Solve for x
    x = 22,780,099,607.36/187,630.63
  6. Step 6: Final answer
    x = 121,409.28

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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.