Home / 212,741.78-319,168.02-79,632.50

Finding the Fourth Proportional to 212,741.78, 319,168.02 and 79,632.50

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Solution

The fourth proportional to 212,741.78, 319,168.02 and 79,632.50 is: 119,469.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,741.78 : 319,168.02 = 79,632.50 : x
  2. Step 2: Convert to fraction form
    212,741.78/319,168.02 = 79,632.50/x
  3. Step 3: Cross multiply
    212,741.78x = 319,168.02 × 79,632.50
  4. Step 4: Simplify right side
    212,741.78x = 25,416,147,352.65
  5. Step 5: Solve for x
    x = 25,416,147,352.65/212,741.78
  6. Step 6: Final answer
    x = 119,469.47

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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.