Finding the Fourth Proportional to 118,718.48, 163,942.68 and 76,350.80
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Solution
The fourth proportional to 118,718.48, 163,942.68 and 76,350.80 is: 105,435.61
Step by Step Solution
- Step 1: Write the proportion equation
118,718.48 : 163,942.68 = 76,350.80 : x - Step 2: Convert to fraction form
118,718.48/163,942.68 = 76,350.80/x - Step 3: Cross multiply
118,718.48x = 163,942.68 × 76,350.80 - Step 4: Simplify right side
118,718.48x = 12,517,154,772.14 - Step 5: Solve for x
x = 12,517,154,772.14/118,718.48 - Step 6: Final answer
x = 105,435.61
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1.5x scale
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.