Home / 212,584.22-318,915.57-87,934.94

Finding the Fourth Proportional to 212,584.22, 318,915.57 and 87,934.94

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Solution

The fourth proportional to 212,584.22, 318,915.57 and 87,934.94 is: 131,918.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,584.22 : 318,915.57 = 87,934.94 : x
  2. Step 2: Convert to fraction form
    212,584.22/318,915.57 = 87,934.94/x
  3. Step 3: Cross multiply
    212,584.22x = 318,915.57 × 87,934.94
  4. Step 4: Simplify right side
    212,584.22x = 28,043,821,513.02
  5. Step 5: Solve for x
    x = 28,043,821,513.02/212,584.22
  6. Step 6: Final answer
    x = 131,918.64

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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.