Home / 205,442.85-307,739.84-120,942.64

Finding the Fourth Proportional to 205,442.85, 307,739.84 and 120,942.64

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Solution

The fourth proportional to 205,442.85, 307,739.84 and 120,942.64 is: 181,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,442.85 : 307,739.84 = 120,942.64 : x
  2. Step 2: Convert to fraction form
    205,442.85/307,739.84 = 120,942.64/x
  3. Step 3: Cross multiply
    205,442.85x = 307,739.84 × 120,942.64
  4. Step 4: Simplify right side
    205,442.85x = 37,218,868,682.78
  5. Step 5: Solve for x
    x = 37,218,868,682.78/205,442.85
  6. Step 6: Final answer
    x = 181,164.10

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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.