Finding the Fourth Proportional to 123.18, 184.82 and 69.09
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Solution
The fourth proportional to 123.18, 184.82 and 69.09 is: 103.66
Step by Step Solution
- Step 1: Write the proportion equation
123.18 : 184.82 = 69.09 : x - Step 2: Convert to fraction form
123.18/184.82 = 69.09/x - Step 3: Cross multiply
123.18x = 184.82 × 69.09 - Step 4: Simplify right side
123.18x = 12,768.87 - Step 5: Solve for x
x = 12,768.87/123.18 - Step 6: Final answer
x = 103.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.