Home / 187,891.80-281,181.60-131,467.20

Finding the Fourth Proportional to 187,891.80, 281,181.60 and 131,467.20

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Solution

The fourth proportional to 187,891.80, 281,181.60 and 131,467.20 is: 196,741.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,891.80 : 281,181.60 = 131,467.20 : x
  2. Step 2: Convert to fraction form
    187,891.80/281,181.60 = 131,467.20/x
  3. Step 3: Cross multiply
    187,891.80x = 281,181.60 × 131,467.20
  4. Step 4: Simplify right side
    187,891.80x = 36,966,157,643.52
  5. Step 5: Solve for x
    x = 36,966,157,643.52/187,891.80
  6. Step 6: Final answer
    x = 196,741.73

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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.