Home / 212,087.40-318,107.16-54,317.04

Finding the Fourth Proportional to 212,087.40, 318,107.16 and 54,317.04

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Solution

The fourth proportional to 212,087.40, 318,107.16 and 54,317.04 is: 81,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,087.40 : 318,107.16 = 54,317.04 : x
  2. Step 2: Convert to fraction form
    212,087.40/318,107.16 = 54,317.04/x
  3. Step 3: Cross multiply
    212,087.40x = 318,107.16 × 54,317.04
  4. Step 4: Simplify right side
    212,087.40x = 17,278,639,334.01
  5. Step 5: Solve for x
    x = 17,278,639,334.01/212,087.40
  6. Step 6: Final answer
    x = 81,469.43

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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.