Finding the Fourth Proportional to 137,581.80, 189,872.70 and 76,348.08
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Solution
The fourth proportional to 137,581.80, 189,872.70 and 76,348.08 is: 105,365.80
Step by Step Solution
- Step 1: Write the proportion equation
137,581.80 : 189,872.70 = 76,348.08 : x - Step 2: Convert to fraction form
137,581.80/189,872.70 = 76,348.08/x - Step 3: Cross multiply
137,581.80x = 189,872.70 × 76,348.08 - Step 4: Simplify right side
137,581.80x = 14,496,416,089.42 - Step 5: Solve for x
x = 14,496,416,089.42/137,581.80 - Step 6: Final answer
x = 105,365.80
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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.