Finding the Fourth Proportional to 100.02, 137.94 and 68.88
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Solution
The fourth proportional to 100.02, 137.94 and 68.88 is: 94.99
Step by Step Solution
- Step 1: Write the proportion equation
100.02 : 137.94 = 68.88 : x - Step 2: Convert to fraction form
100.02/137.94 = 68.88/x - Step 3: Cross multiply
100.02x = 137.94 × 68.88 - Step 4: Simplify right side
100.02x = 9,501.31 - Step 5: Solve for x
x = 9,501.31/100.02 - Step 6: Final answer
x = 94.99
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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.