Finding the Fourth Proportional to 137,290.48, 189,459.44 and 76,861.68
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Solution
The fourth proportional to 137,290.48, 189,459.44 and 76,861.68 is: 106,068.32
Step by Step Solution
- Step 1: Write the proportion equation
137,290.48 : 189,459.44 = 76,861.68 : x - Step 2: Convert to fraction form
137,290.48/189,459.44 = 76,861.68/x - Step 3: Cross multiply
137,290.48x = 189,459.44 × 76,861.68 - Step 4: Simplify right side
137,290.48x = 14,562,170,850.26 - Step 5: Solve for x
x = 14,562,170,850.26/137,290.48 - Step 6: Final answer
x = 106,068.32
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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.