Home / 213,084.72-319,661.76-79,975.44

Finding the Fourth Proportional to 213,084.72, 319,661.76 and 79,975.44

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Solution

The fourth proportional to 213,084.72, 319,661.76 and 79,975.44 is: 119,976.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,084.72 : 319,661.76 = 79,975.44 : x
  2. Step 2: Convert to fraction form
    213,084.72/319,661.76 = 79,975.44/x
  3. Step 3: Cross multiply
    213,084.72x = 319,661.76 × 79,975.44
  4. Step 4: Simplify right side
    213,084.72x = 25,565,089,907.17
  5. Step 5: Solve for x
    x = 25,565,089,907.17/213,084.72
  6. Step 6: Final answer
    x = 119,976.18

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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.