Home / 187,629.72-281,442.82-81,089

Finding the Fourth Proportional to 187,629.72, 281,442.82 and 81,089

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Solution

The fourth proportional to 187,629.72, 281,442.82 and 81,089 is: 121,632.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,629.72 : 281,442.82 = 81,089 : x
  2. Step 2: Convert to fraction form
    187,629.72/281,442.82 = 81,089/x
  3. Step 3: Cross multiply
    187,629.72x = 281,442.82 × 81,089
  4. Step 4: Simplify right side
    187,629.72x = 22,821,916,830.98
  5. Step 5: Solve for x
    x = 22,821,916,830.98/187,629.72
  6. Step 6: Final answer
    x = 121,632.74

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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.