Home / 212,290.09-318,511.67-107,029.78

Finding the Fourth Proportional to 212,290.09, 318,511.67 and 107,029.78

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Solution

The fourth proportional to 212,290.09, 318,511.67 and 107,029.78 is: 160,583.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,290.09 : 318,511.67 = 107,029.78 : x
  2. Step 2: Convert to fraction form
    212,290.09/318,511.67 = 107,029.78/x
  3. Step 3: Cross multiply
    212,290.09x = 318,511.67 × 107,029.78
  4. Step 4: Simplify right side
    212,290.09x = 34,090,233,967.53
  5. Step 5: Solve for x
    x = 34,090,233,967.53/212,290.09
  6. Step 6: Final answer
    x = 160,583.26

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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.