Finding the Fourth Proportional to 137,586.87, 189,952.70 and 89,919.99
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Solution
The fourth proportional to 137,586.87, 189,952.70 and 89,919.99 is: 124,143.71
Step by Step Solution
- Step 1: Write the proportion equation
137,586.87 : 189,952.70 = 89,919.99 : x - Step 2: Convert to fraction form
137,586.87/189,952.70 = 89,919.99/x - Step 3: Cross multiply
137,586.87x = 189,952.70 × 89,919.99 - Step 4: Simplify right side
137,586.87x = 17,080,544,434.87 - Step 5: Solve for x
x = 17,080,544,434.87/137,586.87 - Step 6: Final answer
x = 124,143.71
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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.