Finding the Fourth Proportional to 191,890.12, 287,660.94 and 67,163.08
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Solution
The fourth proportional to 191,890.12, 287,660.94 and 67,163.08 is: 100,683.63
Step by Step Solution
- Step 1: Write the proportion equation
191,890.12 : 287,660.94 = 67,163.08 : x - Step 2: Convert to fraction form
191,890.12/287,660.94 = 67,163.08/x - Step 3: Cross multiply
191,890.12x = 287,660.94 × 67,163.08 - Step 4: Simplify right side
191,890.12x = 19,320,194,726.10 - Step 5: Solve for x
x = 19,320,194,726.10/191,890.12 - Step 6: Final answer
x = 100,683.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.