Finding the Fourth Proportional to 205,971.39, 309,474.68 and 131,124.96
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Solution
The fourth proportional to 205,971.39, 309,474.68 and 131,124.96 is: 197,016.95
Step by Step Solution
- Step 1: Write the proportion equation
205,971.39 : 309,474.68 = 131,124.96 : x - Step 2: Convert to fraction form
205,971.39/309,474.68 = 131,124.96/x - Step 3: Cross multiply
205,971.39x = 309,474.68 × 131,124.96 - Step 4: Simplify right side
205,971.39x = 40,579,854,380.39 - Step 5: Solve for x
x = 40,579,854,380.39/205,971.39 - Step 6: Final answer
x = 197,016.95
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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.