Home / 212,291.76-318,339.24-79,136.28

Finding the Fourth Proportional to 212,291.76, 318,339.24 and 79,136.28

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Solution

The fourth proportional to 212,291.76, 318,339.24 and 79,136.28 is: 118,667.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,291.76 : 318,339.24 = 79,136.28 : x
  2. Step 2: Convert to fraction form
    212,291.76/318,339.24 = 79,136.28/x
  3. Step 3: Cross multiply
    212,291.76x = 318,339.24 × 79,136.28
  4. Step 4: Simplify right side
    212,291.76x = 25,192,183,231.63
  5. Step 5: Solve for x
    x = 25,192,183,231.63/212,291.76
  6. Step 6: Final answer
    x = 118,667.74

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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.