Finding the Fourth Proportional to 118,912.20, 178,368.30 and 48,841.80
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Solution
The fourth proportional to 118,912.20, 178,368.30 and 48,841.80 is: 73,262.70
Step by Step Solution
- Step 1: Write the proportion equation
118,912.20 : 178,368.30 = 48,841.80 : x - Step 2: Convert to fraction form
118,912.20/178,368.30 = 48,841.80/x - Step 3: Cross multiply
118,912.20x = 178,368.30 × 48,841.80 - Step 4: Simplify right side
118,912.20x = 8,711,828,834.94 - Step 5: Solve for x
x = 8,711,828,834.94/118,912.20 - Step 6: Final answer
x = 73,262.70
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1.5x scale
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.