Finding the Fourth Proportional to 131.40, 181.34 and 73.18
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Solution
The fourth proportional to 131.40, 181.34 and 73.18 is: 100.99
Step by Step Solution
- Step 1: Write the proportion equation
131.40 : 181.34 = 73.18 : x - Step 2: Convert to fraction form
131.40/181.34 = 73.18/x - Step 3: Cross multiply
131.40x = 181.34 × 73.18 - Step 4: Simplify right side
131.40x = 13,270.46 - Step 5: Solve for x
x = 13,270.46/131.40 - Step 6: Final answer
x = 100.99
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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.