Finding the Fourth Proportional to 99,216.97, 136,921.71 and 53,896.75
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Solution
The fourth proportional to 99,216.97, 136,921.71 and 53,896.75 is: 74,378.76
Step by Step Solution
- Step 1: Write the proportion equation
99,216.97 : 136,921.71 = 53,896.75 : x - Step 2: Convert to fraction form
99,216.97/136,921.71 = 53,896.75/x - Step 3: Cross multiply
99,216.97x = 136,921.71 × 53,896.75 - Step 4: Simplify right side
99,216.97x = 7,379,635,173.44 - Step 5: Solve for x
x = 7,379,635,173.44/99,216.97 - Step 6: Final answer
x = 74,378.76
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1.5x scale
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.