Finding the Fourth Proportional to 136,958.08, 188,995.36 and 76,516.80
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Solution
The fourth proportional to 136,958.08, 188,995.36 and 76,516.80 is: 105,589.39
Step by Step Solution
- Step 1: Write the proportion equation
136,958.08 : 188,995.36 = 76,516.80 : x - Step 2: Convert to fraction form
136,958.08/188,995.36 = 76,516.80/x - Step 3: Cross multiply
136,958.08x = 188,995.36 × 76,516.80 - Step 4: Simplify right side
136,958.08x = 14,461,320,162.05 - Step 5: Solve for x
x = 14,461,320,162.05/136,958.08 - Step 6: Final answer
x = 105,589.39
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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.