Finding the Fourth Proportional to 137.20, 189.24 and 93.52
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Solution
The fourth proportional to 137.20, 189.24 and 93.52 is: 128.99
Step by Step Solution
- Step 1: Write the proportion equation
137.20 : 189.24 = 93.52 : x - Step 2: Convert to fraction form
137.20/189.24 = 93.52/x - Step 3: Cross multiply
137.20x = 189.24 × 93.52 - Step 4: Simplify right side
137.20x = 17,697.72 - Step 5: Solve for x
x = 17,697.72/137.20 - Step 6: Final answer
x = 128.99
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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.