Finding the Fourth Proportional to 143.06, 197.36 and 93.92
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Solution
The fourth proportional to 143.06, 197.36 and 93.92 is: 129.57
Step by Step Solution
- Step 1: Write the proportion equation
143.06 : 197.36 = 93.92 : x - Step 2: Convert to fraction form
143.06/197.36 = 93.92/x - Step 3: Cross multiply
143.06x = 197.36 × 93.92 - Step 4: Simplify right side
143.06x = 18,536.05 - Step 5: Solve for x
x = 18,536.05/143.06 - Step 6: Final answer
x = 129.57
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.