Home / 212,325.25-318,537.09-72,083.88

Finding the Fourth Proportional to 212,325.25, 318,537.09 and 72,083.88

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Solution

The fourth proportional to 212,325.25, 318,537.09 and 72,083.88 is: 108,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,325.25 : 318,537.09 = 72,083.88 : x
  2. Step 2: Convert to fraction form
    212,325.25/318,537.09 = 72,083.88/x
  3. Step 3: Cross multiply
    212,325.25x = 318,537.09 × 72,083.88
  4. Step 4: Simplify right side
    212,325.25x = 22,961,389,371.11
  5. Step 5: Solve for x
    x = 22,961,389,371.11/212,325.25
  6. Step 6: Final answer
    x = 108,142.53

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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.