Finding the Fourth Proportional to 130.11, 194.99 and 69.11
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Solution
The fourth proportional to 130.11, 194.99 and 69.11 is: 103.57
Step by Step Solution
- Step 1: Write the proportion equation
130.11 : 194.99 = 69.11 : x - Step 2: Convert to fraction form
130.11/194.99 = 69.11/x - Step 3: Cross multiply
130.11x = 194.99 × 69.11 - Step 4: Simplify right side
130.11x = 13,474.44 - Step 5: Solve for x
x = 13,474.44/130.11 - Step 6: Final answer
x = 103.57
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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.