Finding the Fourth Proportional to 99.33, 136.99 and 73.09
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Solution
The fourth proportional to 99.33, 136.99 and 73.09 is: 100.80
Step by Step Solution
- Step 1: Write the proportion equation
99.33 : 136.99 = 73.09 : x - Step 2: Convert to fraction form
99.33/136.99 = 73.09/x - Step 3: Cross multiply
99.33x = 136.99 × 73.09 - Step 4: Simplify right side
99.33x = 10,012.60 - Step 5: Solve for x
x = 10,012.60/99.33 - Step 6: Final answer
x = 100.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.