Home / 68,087.45-102,131.19-18,167.74

Finding the Fourth Proportional to 68,087.45, 102,131.19 and 18,167.74

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Solution

The fourth proportional to 68,087.45, 102,131.19 and 18,167.74 is: 27,251.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,087.45 : 102,131.19 = 18,167.74 : x
  2. Step 2: Convert to fraction form
    68,087.45/102,131.19 = 18,167.74/x
  3. Step 3: Cross multiply
    68,087.45x = 102,131.19 × 18,167.74
  4. Step 4: Simplify right side
    68,087.45x = 1,855,492,905.81
  5. Step 5: Solve for x
    x = 1,855,492,905.81/68,087.45
  6. Step 6: Final answer
    x = 27,251.61

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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.