Finding the Fourth Proportional to 137.03, 188.72 and 124.88
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Solution
The fourth proportional to 137.03, 188.72 and 124.88 is: 171.99
Step by Step Solution
- Step 1: Write the proportion equation
137.03 : 188.72 = 124.88 : x - Step 2: Convert to fraction form
137.03/188.72 = 124.88/x - Step 3: Cross multiply
137.03x = 188.72 × 124.88 - Step 4: Simplify right side
137.03x = 23,566.25 - Step 5: Solve for x
x = 23,566.25/137.03 - Step 6: Final answer
x = 171.99
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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.