Finding the Fourth Proportional to 137,149.75, 189,257.73 and 76,709.92
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Solution
The fourth proportional to 137,149.75, 189,257.73 and 76,709.92 is: 105,854.70
Step by Step Solution
- Step 1: Write the proportion equation
137,149.75 : 189,257.73 = 76,709.92 : x - Step 2: Convert to fraction form
137,149.75/189,257.73 = 76,709.92/x - Step 3: Cross multiply
137,149.75x = 189,257.73 × 76,709.92 - Step 4: Simplify right side
137,149.75x = 14,517,945,327.68 - Step 5: Solve for x
x = 14,517,945,327.68/137,149.75 - Step 6: Final answer
x = 105,854.70
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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.