Finding the Fourth Proportional to 140,380.62, 193,727.87 and 76,717.05
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Solution
The fourth proportional to 140,380.62, 193,727.87 and 76,717.05 is: 105,870.96
Step by Step Solution
- Step 1: Write the proportion equation
140,380.62 : 193,727.87 = 76,717.05 : x - Step 2: Convert to fraction form
140,380.62/193,727.87 = 76,717.05/x - Step 3: Cross multiply
140,380.62x = 193,727.87 × 76,717.05 - Step 4: Simplify right side
140,380.62x = 14,862,230,689.18 - Step 5: Solve for x
x = 14,862,230,689.18/140,380.62 - Step 6: Final answer
x = 105,870.96
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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.