Home / 212,197.41-318,291.49-99,815.33

Finding the Fourth Proportional to 212,197.41, 318,291.49 and 99,815.33

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Solution

The fourth proportional to 212,197.41, 318,291.49 and 99,815.33 is: 149,720.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,197.41 : 318,291.49 = 99,815.33 : x
  2. Step 2: Convert to fraction form
    212,197.41/318,291.49 = 99,815.33/x
  3. Step 3: Cross multiply
    212,197.41x = 318,291.49 × 99,815.33
  4. Step 4: Simplify right side
    212,197.41x = 31,770,371,031.04
  5. Step 5: Solve for x
    x = 31,770,371,031.04/212,197.41
  6. Step 6: Final answer
    x = 149,720.82

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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.