Finding the Fourth Proportional to 142,486.48, 213,974.48 and 126,511.99
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Solution
The fourth proportional to 142,486.48, 213,974.48 and 126,511.99 is: 189,985.30
Step by Step Solution
- Step 1: Write the proportion equation
142,486.48 : 213,974.48 = 126,511.99 : x - Step 2: Convert to fraction form
142,486.48/213,974.48 = 126,511.99/x - Step 3: Cross multiply
142,486.48x = 213,974.48 × 126,511.99 - Step 4: Simplify right side
142,486.48x = 27,070,337,274.02 - Step 5: Solve for x
x = 27,070,337,274.02/142,486.48 - Step 6: Final answer
x = 189,985.30
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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.