Finding the Fourth Proportional to 138.73, 207.93 and 102.08
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Solution
The fourth proportional to 138.73, 207.93 and 102.08 is: 153.00
Step by Step Solution
- Step 1: Write the proportion equation
138.73 : 207.93 = 102.08 : x - Step 2: Convert to fraction form
138.73/207.93 = 102.08/x - Step 3: Cross multiply
138.73x = 207.93 × 102.08 - Step 4: Simplify right side
138.73x = 21,225.49 - Step 5: Solve for x
x = 21,225.49/138.73 - Step 6: Final answer
x = 153.00
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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.