Finding the Fourth Proportional to 136,965.85, 189,009.24 and 76,536.99
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Solution
The fourth proportional to 136,965.85, 189,009.24 and 76,536.99 is: 105,619.02
Step by Step Solution
- Step 1: Write the proportion equation
136,965.85 : 189,009.24 = 76,536.99 : x - Step 2: Convert to fraction form
136,965.85/189,009.24 = 76,536.99/x - Step 3: Cross multiply
136,965.85x = 189,009.24 × 76,536.99 - Step 4: Simplify right side
136,965.85x = 14,466,198,311.79 - Step 5: Solve for x
x = 14,466,198,311.79/136,965.85 - Step 6: Final answer
x = 105,619.02
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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.