Home / 211,581.80-291,982.86-120,939.70

Finding the Fourth Proportional to 211,581.80, 291,982.86 and 120,939.70

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Solution

The fourth proportional to 211,581.80, 291,982.86 and 120,939.70 is: 166,896.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,581.80 : 291,982.86 = 120,939.70 : x
  2. Step 2: Convert to fraction form
    211,581.80/291,982.86 = 120,939.70/x
  3. Step 3: Cross multiply
    211,581.80x = 291,982.86 × 120,939.70
  4. Step 4: Simplify right side
    211,581.80x = 35,312,319,493.54
  5. Step 5: Solve for x
    x = 35,312,319,493.54/211,581.80
  6. Step 6: Final answer
    x = 166,896.77

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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.