Finding the Fourth Proportional to 135,347.75, 186,736.95 and 78,748.19
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Solution
The fourth proportional to 135,347.75, 186,736.95 and 78,748.19 is: 108,647.52
Step by Step Solution
- Step 1: Write the proportion equation
135,347.75 : 186,736.95 = 78,748.19 : x - Step 2: Convert to fraction form
135,347.75/186,736.95 = 78,748.19/x - Step 3: Cross multiply
135,347.75x = 186,736.95 × 78,748.19 - Step 4: Simplify right side
135,347.75x = 14,705,196,818.62 - Step 5: Solve for x
x = 14,705,196,818.62/135,347.75 - Step 6: Final answer
x = 108,647.52
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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.