Finding the Fourth Proportional to 129.23, 193.99 and 68.35
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Solution
The fourth proportional to 129.23, 193.99 and 68.35 is: 102.60
Step by Step Solution
- Step 1: Write the proportion equation
129.23 : 193.99 = 68.35 : x - Step 2: Convert to fraction form
129.23/193.99 = 68.35/x - Step 3: Cross multiply
129.23x = 193.99 × 68.35 - Step 4: Simplify right side
129.23x = 13,259.22 - Step 5: Solve for x
x = 13,259.22/129.23 - Step 6: Final answer
x = 102.60
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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.