Finding the Fourth Proportional to 136.99, 189.09 and 88.00
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Solution
The fourth proportional to 136.99, 189.09 and 88.00 is: 121.46
Step by Step Solution
- Step 1: Write the proportion equation
136.99 : 189.09 = 88.00 : x - Step 2: Convert to fraction form
136.99/189.09 = 88.00/x - Step 3: Cross multiply
136.99x = 189.09 × 88.00 - Step 4: Simplify right side
136.99x = 16,638.53 - Step 5: Solve for x
x = 16,638.53/136.99 - Step 6: Final answer
x = 121.46
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.