Finding the Fourth Proportional to 135,343.62, 186,731.26 and 78,744.06
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Solution
The fourth proportional to 135,343.62, 186,731.26 and 78,744.06 is: 108,641.82
Step by Step Solution
- Step 1: Write the proportion equation
135,343.62 : 186,731.26 = 78,744.06 : x - Step 2: Convert to fraction form
135,343.62/186,731.26 = 78,744.06/x - Step 3: Cross multiply
135,343.62x = 186,731.26 × 78,744.06 - Step 4: Simplify right side
135,343.62x = 14,703,977,344.46 - Step 5: Solve for x
x = 14,703,977,344.46/135,343.62 - Step 6: Final answer
x = 108,641.82
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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.