Home / 212,771.25-318,941.59-137,938.94

Finding the Fourth Proportional to 212,771.25, 318,941.59 and 137,938.94

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Solution

The fourth proportional to 212,771.25, 318,941.59 and 137,938.94 is: 206,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,771.25 : 318,941.59 = 137,938.94 : x
  2. Step 2: Convert to fraction form
    212,771.25/318,941.59 = 137,938.94/x
  3. Step 3: Cross multiply
    212,771.25x = 318,941.59 × 137,938.94
  4. Step 4: Simplify right side
    212,771.25x = 43,994,465,299.02
  5. Step 5: Solve for x
    x = 43,994,465,299.02/212,771.25
  6. Step 6: Final answer
    x = 206,768.84

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1.5x scale

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.