Finding the Fourth Proportional to 99,190.70, 136,883.14 and 53,868.70
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Solution
The fourth proportional to 99,190.70, 136,883.14 and 53,868.70 is: 74,338.79
Step by Step Solution
- Step 1: Write the proportion equation
99,190.70 : 136,883.14 = 53,868.70 : x - Step 2: Convert to fraction form
99,190.70/136,883.14 = 53,868.70/x - Step 3: Cross multiply
99,190.70x = 136,883.14 × 53,868.70 - Step 4: Simplify right side
99,190.70x = 7,373,716,840.15 - Step 5: Solve for x
x = 7,373,716,840.15/99,190.70 - Step 6: Final answer
x = 74,338.79
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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.