Home / 212,334.57-318,551.09-72,093.20

Finding the Fourth Proportional to 212,334.57, 318,551.09 and 72,093.20

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Solution

The fourth proportional to 212,334.57, 318,551.09 and 72,093.20 is: 108,156.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,334.57 : 318,551.09 = 72,093.20 : x
  2. Step 2: Convert to fraction form
    212,334.57/318,551.09 = 72,093.20/x
  3. Step 3: Cross multiply
    212,334.57x = 318,551.09 × 72,093.20
  4. Step 4: Simplify right side
    212,334.57x = 22,965,365,488.37
  5. Step 5: Solve for x
    x = 22,965,365,488.37/212,334.57
  6. Step 6: Final answer
    x = 108,156.51

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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.