Finding the Fourth Proportional to 135,399.58, 186,861.93 and 74,975.84
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Solution
The fourth proportional to 135,399.58, 186,861.93 and 74,975.84 is: 103,472.48
Step by Step Solution
- Step 1: Write the proportion equation
135,399.58 : 186,861.93 = 74,975.84 : x - Step 2: Convert to fraction form
135,399.58/186,861.93 = 74,975.84/x - Step 3: Cross multiply
135,399.58x = 186,861.93 × 74,975.84 - Step 4: Simplify right side
135,399.58x = 14,010,130,165.77 - Step 5: Solve for x
x = 14,010,130,165.77/135,399.58 - Step 6: Final answer
x = 103,472.48
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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.