Finding the Fourth Proportional to 137,586.57, 189,873.62 and 77,162.80
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Solution
The fourth proportional to 137,586.57, 189,873.62 and 77,162.80 is: 106,486.99
Step by Step Solution
- Step 1: Write the proportion equation
137,586.57 : 189,873.62 = 77,162.80 : x - Step 2: Convert to fraction form
137,586.57/189,873.62 = 77,162.80/x - Step 3: Cross multiply
137,586.57x = 189,873.62 × 77,162.80 - Step 4: Simplify right side
137,586.57x = 14,651,180,165.34 - Step 5: Solve for x
x = 14,651,180,165.34/137,586.57 - Step 6: Final answer
x = 106,486.99
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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.