Home / 212,234.67-318,391.38-70,089.80

Finding the Fourth Proportional to 212,234.67, 318,391.38 and 70,089.80

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Solution

The fourth proportional to 212,234.67, 318,391.38 and 70,089.80 is: 105,147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,234.67 : 318,391.38 = 70,089.80 : x
  2. Step 2: Convert to fraction form
    212,234.67/318,391.38 = 70,089.80/x
  3. Step 3: Cross multiply
    212,234.67x = 318,391.38 × 70,089.80
  4. Step 4: Simplify right side
    212,234.67x = 22,315,986,553.97
  5. Step 5: Solve for x
    x = 22,315,986,553.97/212,234.67
  6. Step 6: Final answer
    x = 105,147.70

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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.