Finding the Fourth Proportional to 135,394.89, 186,850.77 and 74,965.53
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Solution
The fourth proportional to 135,394.89, 186,850.77 and 74,965.53 is: 103,455.65
Step by Step Solution
- Step 1: Write the proportion equation
135,394.89 : 186,850.77 = 74,965.53 : x - Step 2: Convert to fraction form
135,394.89/186,850.77 = 74,965.53/x - Step 3: Cross multiply
135,394.89x = 186,850.77 × 74,965.53 - Step 4: Simplify right side
135,394.89x = 14,007,367,003.96 - Step 5: Solve for x
x = 14,007,367,003.96/135,394.89 - Step 6: Final answer
x = 103,455.65
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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.