Finding the Fourth Proportional to 135.24, 202.68 and 121.56
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Solution
The fourth proportional to 135.24, 202.68 and 121.56 is: 182.18
Step by Step Solution
- Step 1: Write the proportion equation
135.24 : 202.68 = 121.56 : x - Step 2: Convert to fraction form
135.24/202.68 = 121.56/x - Step 3: Cross multiply
135.24x = 202.68 × 121.56 - Step 4: Simplify right side
135.24x = 24,637.78 - Step 5: Solve for x
x = 24,637.78/135.24 - Step 6: Final answer
x = 182.18
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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.