Home / 212,016.32-318,081.84-71,774.96

Finding the Fourth Proportional to 212,016.32, 318,081.84 and 71,774.96

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Solution

The fourth proportional to 212,016.32, 318,081.84 and 71,774.96 is: 107,681.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,016.32 : 318,081.84 = 71,774.96 : x
  2. Step 2: Convert to fraction form
    212,016.32/318,081.84 = 71,774.96/x
  3. Step 3: Cross multiply
    212,016.32x = 318,081.84 × 71,774.96
  4. Step 4: Simplify right side
    212,016.32x = 22,830,311,342.73
  5. Step 5: Solve for x
    x = 22,830,311,342.73/212,016.32
  6. Step 6: Final answer
    x = 107,681.86

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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.