Home / 189,843.12-285,207.53-111,012.75

Finding the Fourth Proportional to 189,843.12, 285,207.53 and 111,012.75

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Solution

The fourth proportional to 189,843.12, 285,207.53 and 111,012.75 is: 166,778.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,843.12 : 285,207.53 = 111,012.75 : x
  2. Step 2: Convert to fraction form
    189,843.12/285,207.53 = 111,012.75/x
  3. Step 3: Cross multiply
    189,843.12x = 285,207.53 × 111,012.75
  4. Step 4: Simplify right side
    189,843.12x = 31,661,671,670.94
  5. Step 5: Solve for x
    x = 31,661,671,670.94/189,843.12
  6. Step 6: Final answer
    x = 166,778.08

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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.