Finding the Fourth Proportional to 108,776.62, 149,832.04 and 76,890.70
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Solution
The fourth proportional to 108,776.62, 149,832.04 and 76,890.70 is: 105,911.46
Step by Step Solution
- Step 1: Write the proportion equation
108,776.62 : 149,832.04 = 76,890.70 : x - Step 2: Convert to fraction form
108,776.62/149,832.04 = 76,890.70/x - Step 3: Cross multiply
108,776.62x = 149,832.04 × 76,890.70 - Step 4: Simplify right side
108,776.62x = 11,520,690,438.03 - Step 5: Solve for x
x = 11,520,690,438.03/108,776.62 - Step 6: Final answer
x = 105,911.46
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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.