Finding the Fourth Proportional to 125.12, 187.70 and 43.99
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Solution
The fourth proportional to 125.12, 187.70 and 43.99 is: 65.99
Step by Step Solution
- Step 1: Write the proportion equation
125.12 : 187.70 = 43.99 : x - Step 2: Convert to fraction form
125.12/187.70 = 43.99/x - Step 3: Cross multiply
125.12x = 187.70 × 43.99 - Step 4: Simplify right side
125.12x = 8,256.23 - Step 5: Solve for x
x = 8,256.23/125.12 - Step 6: Final answer
x = 65.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.