Finding the Fourth Proportional to 118,731.40, 178,163.10 and 48,605.80
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Solution
The fourth proportional to 118,731.40, 178,163.10 and 48,605.80 is: 72,935.72
Step by Step Solution
- Step 1: Write the proportion equation
118,731.40 : 178,163.10 = 48,605.80 : x - Step 2: Convert to fraction form
118,731.40/178,163.10 = 48,605.80/x - Step 3: Cross multiply
118,731.40x = 178,163.10 × 48,605.80 - Step 4: Simplify right side
118,731.40x = 8,659,760,005.98 - Step 5: Solve for x
x = 8,659,760,005.98/118,731.40 - Step 6: Final answer
x = 72,935.72
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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.