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Finding the Fourth Proportional to 187,673.64, 281,355.30 and 87,784.68

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Solution

The fourth proportional to 187,673.64, 281,355.30 and 87,784.68 is: 131,604.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,673.64 : 281,355.30 = 87,784.68 : x
  2. Step 2: Convert to fraction form
    187,673.64/281,355.30 = 87,784.68/x
  3. Step 3: Cross multiply
    187,673.64x = 281,355.30 × 87,784.68
  4. Step 4: Simplify right side
    187,673.64x = 24,698,684,976.80
  5. Step 5: Solve for x
    x = 24,698,684,976.80/187,673.64
  6. Step 6: Final answer
    x = 131,604.44

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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.