Finding the Fourth Proportional to 99,198.74, 136,947.57 and 76,487.96
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Solution
The fourth proportional to 99,198.74, 136,947.57 and 76,487.96 is: 105,594.49
Step by Step Solution
- Step 1: Write the proportion equation
99,198.74 : 136,947.57 = 76,487.96 : x - Step 2: Convert to fraction form
99,198.74/136,947.57 = 76,487.96/x - Step 3: Cross multiply
99,198.74x = 136,947.57 × 76,487.96 - Step 4: Simplify right side
99,198.74x = 10,474,840,256.26 - Step 5: Solve for x
x = 10,474,840,256.26/99,198.74 - Step 6: Final answer
x = 105,594.49
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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.