Home / 212,326.32-318,391.05-79,170.83

Finding the Fourth Proportional to 212,326.32, 318,391.05 and 79,170.83

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Solution

The fourth proportional to 212,326.32, 318,391.05 and 79,170.83 is: 118,719.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,326.32 : 318,391.05 = 79,170.83 : x
  2. Step 2: Convert to fraction form
    212,326.32/318,391.05 = 79,170.83/x
  3. Step 3: Cross multiply
    212,326.32x = 318,391.05 × 79,170.83
  4. Step 4: Simplify right side
    212,326.32x = 25,207,283,591.97
  5. Step 5: Solve for x
    x = 25,207,283,591.97/212,326.32
  6. Step 6: Final answer
    x = 118,719.54

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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.