Home / 213,131.07-319,837.79-117,135.32

Finding the Fourth Proportional to 213,131.07, 319,837.79 and 117,135.32

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Solution

The fourth proportional to 213,131.07, 319,837.79 and 117,135.32 is: 175,780.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,131.07 : 319,837.79 = 117,135.32 : x
  2. Step 2: Convert to fraction form
    213,131.07/319,837.79 = 117,135.32/x
  3. Step 3: Cross multiply
    213,131.07x = 319,837.79 × 117,135.32
  4. Step 4: Simplify right side
    213,131.07x = 37,464,299,694.88
  5. Step 5: Solve for x
    x = 37,464,299,694.88/213,131.07
  6. Step 6: Final answer
    x = 175,780.56

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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.