Home / 212,306.67-318,361.86-79,151.31

Finding the Fourth Proportional to 212,306.67, 318,361.86 and 79,151.31

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Solution

The fourth proportional to 212,306.67, 318,361.86 and 79,151.31 is: 118,690.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,306.67 : 318,361.86 = 79,151.31 : x
  2. Step 2: Convert to fraction form
    212,306.67/318,361.86 = 79,151.31/x
  3. Step 3: Cross multiply
    212,306.67x = 318,361.86 × 79,151.31
  4. Step 4: Simplify right side
    212,306.67x = 25,198,758,273.04
  5. Step 5: Solve for x
    x = 25,198,758,273.04/212,306.67
  6. Step 6: Final answer
    x = 118,690.37

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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.