Finding the Fourth Proportional to 135,028.40, 186,343.80 and 84,755.12
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Solution
The fourth proportional to 135,028.40, 186,343.80 and 84,755.12 is: 116,964.96
Step by Step Solution
- Step 1: Write the proportion equation
135,028.40 : 186,343.80 = 84,755.12 : x - Step 2: Convert to fraction form
135,028.40/186,343.80 = 84,755.12/x - Step 3: Cross multiply
135,028.40x = 186,343.80 × 84,755.12 - Step 4: Simplify right side
135,028.40x = 15,793,591,130.26 - Step 5: Solve for x
x = 15,793,591,130.26/135,028.40 - Step 6: Final answer
x = 116,964.96
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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.