Finding the Fourth Proportional to 138,975.18, 208,741.74 and 82,924.68
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Solution
The fourth proportional to 138,975.18, 208,741.74 and 82,924.68 is: 124,553.48
Step by Step Solution
- Step 1: Write the proportion equation
138,975.18 : 208,741.74 = 82,924.68 : x - Step 2: Convert to fraction form
138,975.18/208,741.74 = 82,924.68/x - Step 3: Cross multiply
138,975.18x = 208,741.74 × 82,924.68 - Step 4: Simplify right side
138,975.18x = 17,309,841,992.14 - Step 5: Solve for x
x = 17,309,841,992.14/138,975.18 - Step 6: Final answer
x = 124,553.48
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.