Finding the Fourth Proportional to 129.74, 179.10 and 93.08
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Solution
The fourth proportional to 129.74, 179.10 and 93.08 is: 128.49
Step by Step Solution
- Step 1: Write the proportion equation
129.74 : 179.10 = 93.08 : x - Step 2: Convert to fraction form
129.74/179.10 = 93.08/x - Step 3: Cross multiply
129.74x = 179.10 × 93.08 - Step 4: Simplify right side
129.74x = 16,670.63 - Step 5: Solve for x
x = 16,670.63/129.74 - Step 6: Final answer
x = 128.49
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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.