Finding the Fourth Proportional to 100,944.68, 139,303.80 and 55,004.09
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Solution
The fourth proportional to 100,944.68, 139,303.80 and 55,004.09 is: 75,905.72
Step by Step Solution
- Step 1: Write the proportion equation
100,944.68 : 139,303.80 = 55,004.09 : x - Step 2: Convert to fraction form
100,944.68/139,303.80 = 55,004.09/x - Step 3: Cross multiply
100,944.68x = 139,303.80 × 55,004.09 - Step 4: Simplify right side
100,944.68x = 7,662,278,056.02 - Step 5: Solve for x
x = 7,662,278,056.02/100,944.68 - Step 6: Final answer
x = 75,905.72
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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.