Finding the Fourth Proportional to 135,391.34, 186,842.02 and 77,998.99
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Solution
The fourth proportional to 135,391.34, 186,842.02 and 77,998.99 is: 107,639.74
Step by Step Solution
- Step 1: Write the proportion equation
135,391.34 : 186,842.02 = 77,998.99 : x - Step 2: Convert to fraction form
135,391.34/186,842.02 = 77,998.99/x - Step 3: Cross multiply
135,391.34x = 186,842.02 × 77,998.99 - Step 4: Simplify right side
135,391.34x = 14,573,488,849.56 - Step 5: Solve for x
x = 14,573,488,849.56/135,391.34 - Step 6: Final answer
x = 107,639.74
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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.