Finding the Fourth Proportional to 139.08, 207.26 and 133.92
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Solution
The fourth proportional to 139.08, 207.26 and 133.92 is: 199.57
Step by Step Solution
- Step 1: Write the proportion equation
139.08 : 207.26 = 133.92 : x - Step 2: Convert to fraction form
139.08/207.26 = 133.92/x - Step 3: Cross multiply
139.08x = 207.26 × 133.92 - Step 4: Simplify right side
139.08x = 27,756.26 - Step 5: Solve for x
x = 27,756.26/139.08 - Step 6: Final answer
x = 199.57
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.