Finding the Fourth Proportional to 145,531.14, 200,832.68 and 81,868.99
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Solution
The fourth proportional to 145,531.14, 200,832.68 and 81,868.99 is: 112,979.04
Step by Step Solution
- Step 1: Write the proportion equation
145,531.14 : 200,832.68 = 81,868.99 : x - Step 2: Convert to fraction form
145,531.14/200,832.68 = 81,868.99/x - Step 3: Cross multiply
145,531.14x = 200,832.68 × 81,868.99 - Step 4: Simplify right side
145,531.14x = 16,441,968,670.59 - Step 5: Solve for x
x = 16,441,968,670.59/145,531.14 - Step 6: Final answer
x = 112,979.04
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1.5x scale
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.