Finding the Fourth Proportional to 99,218.95, 136,924.61 and 53,896.92
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Solution
The fourth proportional to 99,218.95, 136,924.61 and 53,896.92 is: 74,379.09
Step by Step Solution
- Step 1: Write the proportion equation
99,218.95 : 136,924.61 = 53,896.92 : x - Step 2: Convert to fraction form
99,218.95/136,924.61 = 53,896.92/x - Step 3: Cross multiply
99,218.95x = 136,924.61 × 53,896.92 - Step 4: Simplify right side
99,218.95x = 7,379,814,751.20 - Step 5: Solve for x
x = 7,379,814,751.20/99,218.95 - Step 6: Final answer
x = 74,379.09
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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.