Home / 212,749.50-319,178.94-79,631.67

Finding the Fourth Proportional to 212,749.50, 319,178.94 and 79,631.67

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Solution

The fourth proportional to 212,749.50, 319,178.94 and 79,631.67 is: 119,467.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,749.50 : 319,178.94 = 79,631.67 : x
  2. Step 2: Convert to fraction form
    212,749.50/319,178.94 = 79,631.67/x
  3. Step 3: Cross multiply
    212,749.50x = 319,178.94 × 79,631.67
  4. Step 4: Simplify right side
    212,749.50x = 25,416,752,021.03
  5. Step 5: Solve for x
    x = 25,416,752,021.03/212,749.50
  6. Step 6: Final answer
    x = 119,467.98

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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.