Finding the Fourth Proportional to 135,339.62, 186,742.73 and 74,907.41
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Solution
The fourth proportional to 135,339.62, 186,742.73 and 74,907.41 is: 103,357.86
Step by Step Solution
- Step 1: Write the proportion equation
135,339.62 : 186,742.73 = 74,907.41 : x - Step 2: Convert to fraction form
135,339.62/186,742.73 = 74,907.41/x - Step 3: Cross multiply
135,339.62x = 186,742.73 × 74,907.41 - Step 4: Simplify right side
135,339.62x = 13,988,413,494.18 - Step 5: Solve for x
x = 13,988,413,494.18/135,339.62 - Step 6: Final answer
x = 103,357.86
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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.