Finding the Fourth Proportional to 147.16, 203.08 and 91.88
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Solution
The fourth proportional to 147.16, 203.08 and 91.88 is: 126.79
Step by Step Solution
- Step 1: Write the proportion equation
147.16 : 203.08 = 91.88 : x - Step 2: Convert to fraction form
147.16/203.08 = 91.88/x - Step 3: Cross multiply
147.16x = 203.08 × 91.88 - Step 4: Simplify right side
147.16x = 18,658.99 - Step 5: Solve for x
x = 18,658.99/147.16 - Step 6: Final answer
x = 126.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.