Home / 68,199.41-102,299.12-20,814.75

Finding the Fourth Proportional to 68,199.41, 102,299.12 and 20,814.75

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Solution

The fourth proportional to 68,199.41, 102,299.12 and 20,814.75 is: 31,222.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,199.41 : 102,299.12 = 20,814.75 : x
  2. Step 2: Convert to fraction form
    68,199.41/102,299.12 = 20,814.75/x
  3. Step 3: Cross multiply
    68,199.41x = 102,299.12 × 20,814.75
  4. Step 4: Simplify right side
    68,199.41x = 2,129,330,503.95
  5. Step 5: Solve for x
    x = 2,129,330,503.95/68,199.41
  6. Step 6: Final answer
    x = 31,222.13

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1.5x scale

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.