Finding the Fourth Proportional to 130.14, 179.58 and 80.99
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Solution
The fourth proportional to 130.14, 179.58 and 80.99 is: 111.75
Step by Step Solution
- Step 1: Write the proportion equation
130.14 : 179.58 = 80.99 : x - Step 2: Convert to fraction form
130.14/179.58 = 80.99/x - Step 3: Cross multiply
130.14x = 179.58 × 80.99 - Step 4: Simplify right side
130.14x = 14,543.29 - Step 5: Solve for x
x = 14,543.29/130.14 - Step 6: Final answer
x = 111.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.