Finding the Fourth Proportional to 130.17, 194.99 and 97.70
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Solution
The fourth proportional to 130.17, 194.99 and 97.70 is: 146.36
Step by Step Solution
- Step 1: Write the proportion equation
130.17 : 194.99 = 97.70 : x - Step 2: Convert to fraction form
130.17/194.99 = 97.70/x - Step 3: Cross multiply
130.17x = 194.99 × 97.70 - Step 4: Simplify right side
130.17x = 19,051.44 - Step 5: Solve for x
x = 19,051.44/130.17 - Step 6: Final answer
x = 146.36
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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.