Home / 212,083.14-318,040.97-85,699.52

Finding the Fourth Proportional to 212,083.14, 318,040.97 and 85,699.52

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Solution

The fourth proportional to 212,083.14, 318,040.97 and 85,699.52 is: 128,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,083.14 : 318,040.97 = 85,699.52 : x
  2. Step 2: Convert to fraction form
    212,083.14/318,040.97 = 85,699.52/x
  3. Step 3: Cross multiply
    212,083.14x = 318,040.97 × 85,699.52
  4. Step 4: Simplify right side
    212,083.14x = 27,255,956,450.63
  5. Step 5: Solve for x
    x = 27,255,956,450.63/212,083.14
  6. Step 6: Final answer
    x = 128,515.43

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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.