Home / 211,021.30-291,217.26-120,392.02

Finding the Fourth Proportional to 211,021.30, 291,217.26 and 120,392.02

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Solution

The fourth proportional to 211,021.30, 291,217.26 and 120,392.02 is: 166,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,021.30 : 291,217.26 = 120,392.02 : x
  2. Step 2: Convert to fraction form
    211,021.30/291,217.26 = 120,392.02/x
  3. Step 3: Cross multiply
    211,021.30x = 291,217.26 × 120,392.02
  4. Step 4: Simplify right side
    211,021.30x = 35,060,234,190.27
  5. Step 5: Solve for x
    x = 35,060,234,190.27/211,021.30
  6. Step 6: Final answer
    x = 166,145.48

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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.