Finding the Fourth Proportional to 135,189.81, 186,560.19 and 74,761.64
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Solution
The fourth proportional to 135,189.81, 186,560.19 and 74,761.64 is: 103,170.09
Step by Step Solution
- Step 1: Write the proportion equation
135,189.81 : 186,560.19 = 74,761.64 : x - Step 2: Convert to fraction form
135,189.81/186,560.19 = 74,761.64/x - Step 3: Cross multiply
135,189.81x = 186,560.19 × 74,761.64 - Step 4: Simplify right side
135,189.81x = 13,947,544,830.31 - Step 5: Solve for x
x = 13,947,544,830.31/135,189.81 - Step 6: Final answer
x = 103,170.09
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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.