Finding the Fourth Proportional to 159.78, 220.14 and 126.99
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Solution
The fourth proportional to 159.78, 220.14 and 126.99 is: 174.96
Step by Step Solution
- Step 1: Write the proportion equation
159.78 : 220.14 = 126.99 : x - Step 2: Convert to fraction form
159.78/220.14 = 126.99/x - Step 3: Cross multiply
159.78x = 220.14 × 126.99 - Step 4: Simplify right side
159.78x = 27,955.58 - Step 5: Solve for x
x = 27,955.58/159.78 - Step 6: Final answer
x = 174.96
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.