Home / 189,782.36-261,872.52-109,179.08

Finding the Fourth Proportional to 189,782.36, 261,872.52 and 109,179.08

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Solution

The fourth proportional to 189,782.36, 261,872.52 and 109,179.08 is: 150,651.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,782.36 : 261,872.52 = 109,179.08 : x
  2. Step 2: Convert to fraction form
    189,782.36/261,872.52 = 109,179.08/x
  3. Step 3: Cross multiply
    189,782.36x = 261,872.52 × 109,179.08
  4. Step 4: Simplify right side
    189,782.36x = 28,591,000,810.88
  5. Step 5: Solve for x
    x = 28,591,000,810.88/189,782.36
  6. Step 6: Final answer
    x = 150,651.52

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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.