Finding the Fourth Proportional to 100,816.93, 139,126.23 and 55,493.92
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Solution
The fourth proportional to 100,816.93, 139,126.23 and 55,493.92 is: 76,580.99
Step by Step Solution
- Step 1: Write the proportion equation
100,816.93 : 139,126.23 = 55,493.92 : x - Step 2: Convert to fraction form
100,816.93/139,126.23 = 55,493.92/x - Step 3: Cross multiply
100,816.93x = 139,126.23 × 55,493.92 - Step 4: Simplify right side
100,816.93x = 7,720,659,877.52 - Step 5: Solve for x
x = 7,720,659,877.52/100,816.93 - Step 6: Final answer
x = 76,580.99
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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.