Finding the Fourth Proportional to 137.42, 205.74 and 93.99
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Solution
The fourth proportional to 137.42, 205.74 and 93.99 is: 140.72
Step by Step Solution
- Step 1: Write the proportion equation
137.42 : 205.74 = 93.99 : x - Step 2: Convert to fraction form
137.42/205.74 = 93.99/x - Step 3: Cross multiply
137.42x = 205.74 × 93.99 - Step 4: Simplify right side
137.42x = 19,337.50 - Step 5: Solve for x
x = 19,337.50/137.42 - Step 6: Final answer
x = 140.72
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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.