Home / 212,286.42-318,419.23-79,156.29

Finding the Fourth Proportional to 212,286.42, 318,419.23 and 79,156.29

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Solution

The fourth proportional to 212,286.42, 318,419.23 and 79,156.29 is: 118,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,286.42 : 318,419.23 = 79,156.29 : x
  2. Step 2: Convert to fraction form
    212,286.42/318,419.23 = 79,156.29/x
  3. Step 3: Cross multiply
    212,286.42x = 318,419.23 × 79,156.29
  4. Step 4: Simplify right side
    212,286.42x = 25,204,884,911.46
  5. Step 5: Solve for x
    x = 25,204,884,911.46/212,286.42
  6. Step 6: Final answer
    x = 118,730.56

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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.