Finding the Fourth Proportional to 100,177.04, 138,428.52 and 71,837.84
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Solution
The fourth proportional to 100,177.04, 138,428.52 and 71,837.84 is: 99,268.31
Step by Step Solution
- Step 1: Write the proportion equation
100,177.04 : 138,428.52 = 71,837.84 : x - Step 2: Convert to fraction form
100,177.04/138,428.52 = 71,837.84/x - Step 3: Cross multiply
100,177.04x = 138,428.52 × 71,837.84 - Step 4: Simplify right side
100,177.04x = 9,944,405,871.20 - Step 5: Solve for x
x = 9,944,405,871.20/100,177.04 - Step 6: Final answer
x = 99,268.31
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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.