Finding the Fourth Proportional to 99.68, 137.52 and 60.88
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Solution
The fourth proportional to 99.68, 137.52 and 60.88 is: 83.99
Step by Step Solution
- Step 1: Write the proportion equation
99.68 : 137.52 = 60.88 : x - Step 2: Convert to fraction form
99.68/137.52 = 60.88/x - Step 3: Cross multiply
99.68x = 137.52 × 60.88 - Step 4: Simplify right side
99.68x = 8,372.22 - Step 5: Solve for x
x = 8,372.22/99.68 - Step 6: Final answer
x = 83.99
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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.