Home / 211,379.90-291,706.66-120,747.86

Finding the Fourth Proportional to 211,379.90, 291,706.66 and 120,747.86

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Solution

The fourth proportional to 211,379.90, 291,706.66 and 120,747.86 is: 166,633.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,379.90 : 291,706.66 = 120,747.86 : x
  2. Step 2: Convert to fraction form
    211,379.90/291,706.66 = 120,747.86/x
  3. Step 3: Cross multiply
    211,379.90x = 291,706.66 × 120,747.86
  4. Step 4: Simplify right side
    211,379.90x = 35,222,954,942.75
  5. Step 5: Solve for x
    x = 35,222,954,942.75/211,379.90
  6. Step 6: Final answer
    x = 166,633.42

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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.