Finding the Fourth Proportional to 130.10, 195.08 and 84.74
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Solution
The fourth proportional to 130.10, 195.08 and 84.74 is: 127.06
Step by Step Solution
- Step 1: Write the proportion equation
130.10 : 195.08 = 84.74 : x - Step 2: Convert to fraction form
130.10/195.08 = 84.74/x - Step 3: Cross multiply
130.10x = 195.08 × 84.74 - Step 4: Simplify right side
130.10x = 16,531.08 - Step 5: Solve for x
x = 16,531.08/130.10 - Step 6: Final answer
x = 127.06
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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.