Finding the Fourth Proportional to 100,239.63, 138,330.68 and 55,527.63
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Solution
The fourth proportional to 100,239.63, 138,330.68 and 55,527.63 is: 76,628.12
Step by Step Solution
- Step 1: Write the proportion equation
100,239.63 : 138,330.68 = 55,527.63 : x - Step 2: Convert to fraction form
100,239.63/138,330.68 = 55,527.63/x - Step 3: Cross multiply
100,239.63x = 138,330.68 × 55,527.63 - Step 4: Simplify right side
100,239.63x = 7,681,174,816.69 - Step 5: Solve for x
x = 7,681,174,816.69/100,239.63 - Step 6: Final answer
x = 76,628.12
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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.