Home / 131,719.78-181,771.72-71,289

Finding the Fourth Proportional to 131,719.78, 181,771.72 and 71,289

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Solution

The fourth proportional to 131,719.78, 181,771.72 and 71,289 is: 98,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,719.78 : 181,771.72 = 71,289 : x
  2. Step 2: Convert to fraction form
    131,719.78/181,771.72 = 71,289/x
  3. Step 3: Cross multiply
    131,719.78x = 181,771.72 × 71,289
  4. Step 4: Simplify right side
    131,719.78x = 12,958,324,147.08
  5. Step 5: Solve for x
    x = 12,958,324,147.08/131,719.78
  6. Step 6: Final answer
    x = 98,377.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.