Finding the Fourth Proportional to 98,812.40, 136,268.99 and 91,473.19
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Solution
The fourth proportional to 98,812.40, 136,268.99 and 91,473.19 is: 126,147.72
Step by Step Solution
- Step 1: Write the proportion equation
98,812.40 : 136,268.99 = 91,473.19 : x - Step 2: Convert to fraction form
98,812.40/136,268.99 = 91,473.19/x - Step 3: Cross multiply
98,812.40x = 136,268.99 × 91,473.19 - Step 4: Simplify right side
98,812.40x = 12,464,958,532.03 - Step 5: Solve for x
x = 12,464,958,532.03/98,812.40 - Step 6: Final answer
x = 126,147.72
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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.