Finding the Fourth Proportional to 135,120.87, 186,458.70 and 74,687.91
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Solution
The fourth proportional to 135,120.87, 186,458.70 and 74,687.91 is: 103,064.84
Step by Step Solution
- Step 1: Write the proportion equation
135,120.87 : 186,458.70 = 74,687.91 : x - Step 2: Convert to fraction form
135,120.87/186,458.70 = 74,687.91/x - Step 3: Cross multiply
135,120.87x = 186,458.70 × 74,687.91 - Step 4: Simplify right side
135,120.87x = 13,926,210,604.32 - Step 5: Solve for x
x = 13,926,210,604.32/135,120.87 - Step 6: Final answer
x = 103,064.84
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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.