Finding the Fourth Proportional to 135,286.21, 202,960.90 and 39,225.43
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Solution
The fourth proportional to 135,286.21, 202,960.90 and 39,225.43 is: 58,847.31
Step by Step Solution
- Step 1: Write the proportion equation
135,286.21 : 202,960.90 = 39,225.43 : x - Step 2: Convert to fraction form
135,286.21/202,960.90 = 39,225.43/x - Step 3: Cross multiply
135,286.21x = 202,960.90 × 39,225.43 - Step 4: Simplify right side
135,286.21x = 7,961,228,983.96 - Step 5: Solve for x
x = 7,961,228,983.96/135,286.21 - Step 6: Final answer
x = 58,847.31
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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.