Finding the Fourth Proportional to 130.86, 195.93 and 84.99
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Solution
The fourth proportional to 130.86, 195.93 and 84.99 is: 127.25
Step by Step Solution
- Step 1: Write the proportion equation
130.86 : 195.93 = 84.99 : x - Step 2: Convert to fraction form
130.86/195.93 = 84.99/x - Step 3: Cross multiply
130.86x = 195.93 × 84.99 - Step 4: Simplify right side
130.86x = 16,652.09 - Step 5: Solve for x
x = 16,652.09/130.86 - Step 6: Final answer
x = 127.25
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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.