Finding the Fourth Proportional to 108.60, 149.99 and 88.08
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Solution
The fourth proportional to 108.60, 149.99 and 88.08 is: 121.65
Step by Step Solution
- Step 1: Write the proportion equation
108.60 : 149.99 = 88.08 : x - Step 2: Convert to fraction form
108.60/149.99 = 88.08/x - Step 3: Cross multiply
108.60x = 149.99 × 88.08 - Step 4: Simplify right side
108.60x = 13,210.68 - Step 5: Solve for x
x = 13,210.68/108.60 - Step 6: Final answer
x = 121.65
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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.