Home / 212,008.32-318,069.90-71,766.96

Finding the Fourth Proportional to 212,008.32, 318,069.90 and 71,766.96

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Solution

The fourth proportional to 212,008.32, 318,069.90 and 71,766.96 is: 107,669.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,008.32 : 318,069.90 = 71,766.96 : x
  2. Step 2: Convert to fraction form
    212,008.32/318,069.90 = 71,766.96/x
  3. Step 3: Cross multiply
    212,008.32x = 318,069.90 × 71,766.96
  4. Step 4: Simplify right side
    212,008.32x = 22,826,909,790.50
  5. Step 5: Solve for x
    x = 22,826,909,790.50/212,008.32
  6. Step 6: Final answer
    x = 107,669.88

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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.