Finding the Fourth Proportional to 135,405.55, 186,861.62 and 74,976.08
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Solution
The fourth proportional to 135,405.55, 186,861.62 and 74,976.08 is: 103,468.07
Step by Step Solution
- Step 1: Write the proportion equation
135,405.55 : 186,861.62 = 74,976.08 : x - Step 2: Convert to fraction form
135,405.55/186,861.62 = 74,976.08/x - Step 3: Cross multiply
135,405.55x = 186,861.62 × 74,976.08 - Step 4: Simplify right side
135,405.55x = 14,010,151,023.18 - Step 5: Solve for x
x = 14,010,151,023.18/135,405.55 - Step 6: Final answer
x = 103,468.07
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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.