Finding the Fourth Proportional to 107.52, 161.14 and 68.99
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Solution
The fourth proportional to 107.52, 161.14 and 68.99 is: 103.38
Step by Step Solution
- Step 1: Write the proportion equation
107.52 : 161.14 = 68.99 : x - Step 2: Convert to fraction form
107.52/161.14 = 68.99/x - Step 3: Cross multiply
107.52x = 161.14 × 68.99 - Step 4: Simplify right side
107.52x = 11,116.20 - Step 5: Solve for x
x = 11,116.20/107.52 - Step 6: Final answer
x = 103.38
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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.