Finding the Fourth Proportional to 135,086.73, 186,418.80 and 74,660.85
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Solution
The fourth proportional to 135,086.73, 186,418.80 and 74,660.85 is: 103,031.48
Step by Step Solution
- Step 1: Write the proportion equation
135,086.73 : 186,418.80 = 74,660.85 : x - Step 2: Convert to fraction form
135,086.73/186,418.80 = 74,660.85/x - Step 3: Cross multiply
135,086.73x = 186,418.80 × 74,660.85 - Step 4: Simplify right side
135,086.73x = 13,918,186,063.98 - Step 5: Solve for x
x = 13,918,186,063.98/135,086.73 - Step 6: Final answer
x = 103,031.48
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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.