Home / 212,538.53-318,752.44-100,188.92

Finding the Fourth Proportional to 212,538.53, 318,752.44 and 100,188.92

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Solution

The fourth proportional to 212,538.53, 318,752.44 and 100,188.92 is: 150,257.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,538.53 : 318,752.44 = 100,188.92 : x
  2. Step 2: Convert to fraction form
    212,538.53/318,752.44 = 100,188.92/x
  3. Step 3: Cross multiply
    212,538.53x = 318,752.44 × 100,188.92
  4. Step 4: Simplify right side
    212,538.53x = 31,935,463,257.37
  5. Step 5: Solve for x
    x = 31,935,463,257.37/212,538.53
  6. Step 6: Final answer
    x = 150,257.29

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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.