Home / 212,016.64-318,065.46-69,902.86

Finding the Fourth Proportional to 212,016.64, 318,065.46 and 69,902.86

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Solution

The fourth proportional to 212,016.64, 318,065.46 and 69,902.86 is: 104,867.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,016.64 : 318,065.46 = 69,902.86 : x
  2. Step 2: Convert to fraction form
    212,016.64/318,065.46 = 69,902.86/x
  3. Step 3: Cross multiply
    212,016.64x = 318,065.46 × 69,902.86
  4. Step 4: Simplify right side
    212,016.64x = 22,233,685,321.22
  5. Step 5: Solve for x
    x = 22,233,685,321.22/212,016.64
  6. Step 6: Final answer
    x = 104,867.64

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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.