Finding the Fourth Proportional to 135,152.62, 186,509.39 and 74,724.80
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Solution
The fourth proportional to 135,152.62, 186,509.39 and 74,724.80 is: 103,119.54
Step by Step Solution
- Step 1: Write the proportion equation
135,152.62 : 186,509.39 = 74,724.80 : x - Step 2: Convert to fraction form
135,152.62/186,509.39 = 74,724.80/x - Step 3: Cross multiply
135,152.62x = 186,509.39 × 74,724.80 - Step 4: Simplify right side
135,152.62x = 13,936,875,559.70 - Step 5: Solve for x
x = 13,936,875,559.70/135,152.62 - Step 6: Final answer
x = 103,119.54
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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.