Home / 211,187.45-291,445.97-115,694.12

Finding the Fourth Proportional to 211,187.45, 291,445.97 and 115,694.12

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Solution

The fourth proportional to 211,187.45, 291,445.97 and 115,694.12 is: 159,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,187.45 : 291,445.97 = 115,694.12 : x
  2. Step 2: Convert to fraction form
    211,187.45/291,445.97 = 115,694.12/x
  3. Step 3: Cross multiply
    211,187.45x = 291,445.97 × 115,694.12
  4. Step 4: Simplify right side
    211,187.45x = 33,718,582,991.00
  5. Step 5: Solve for x
    x = 33,718,582,991.00/211,187.45
  6. Step 6: Final answer
    x = 159,661.87

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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.