Finding the Fourth Proportional to 99,007.86, 136,580.97 and 70,729.95
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Solution
The fourth proportional to 99,007.86, 136,580.97 and 70,729.95 is: 97,571.70
Step by Step Solution
- Step 1: Write the proportion equation
99,007.86 : 136,580.97 = 70,729.95 : x - Step 2: Convert to fraction form
99,007.86/136,580.97 = 70,729.95/x - Step 3: Cross multiply
99,007.86x = 136,580.97 × 70,729.95 - Step 4: Simplify right side
99,007.86x = 9,660,365,179.05 - Step 5: Solve for x
x = 9,660,365,179.05/99,007.86 - Step 6: Final answer
x = 97,571.70
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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.