Home / 212,036.13-318,093.21-69,889.86

Finding the Fourth Proportional to 212,036.13, 318,093.21 and 69,889.86

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Solution

The fourth proportional to 212,036.13, 318,093.21 and 69,889.86 is: 104,847.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,036.13 : 318,093.21 = 69,889.86 : x
  2. Step 2: Convert to fraction form
    212,036.13/318,093.21 = 69,889.86/x
  3. Step 3: Cross multiply
    212,036.13x = 318,093.21 × 69,889.86
  4. Step 4: Simplify right side
    212,036.13x = 22,231,489,913.85
  5. Step 5: Solve for x
    x = 22,231,489,913.85/212,036.13
  6. Step 6: Final answer
    x = 104,847.65

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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.