Home / 259,609.95-389,442.26-107,789.78

Finding the Fourth Proportional to 259,609.95, 389,442.26 and 107,789.78

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Solution

The fourth proportional to 259,609.95, 389,442.26 and 107,789.78 is: 161,696.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,609.95 : 389,442.26 = 107,789.78 : x
  2. Step 2: Convert to fraction form
    259,609.95/389,442.26 = 107,789.78/x
  3. Step 3: Cross multiply
    259,609.95x = 389,442.26 × 107,789.78
  4. Step 4: Simplify right side
    259,609.95x = 41,977,896,771.18
  5. Step 5: Solve for x
    x = 41,977,896,771.18/259,609.95
  6. Step 6: Final answer
    x = 161,696.02

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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.