Finding the Fourth Proportional to 117,528.96, 162,129.80 and 75,042.80
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Solution
The fourth proportional to 117,528.96, 162,129.80 and 75,042.80 is: 103,520.65
Step by Step Solution
- Step 1: Write the proportion equation
117,528.96 : 162,129.80 = 75,042.80 : x - Step 2: Convert to fraction form
117,528.96/162,129.80 = 75,042.80/x - Step 3: Cross multiply
117,528.96x = 162,129.80 × 75,042.80 - Step 4: Simplify right side
117,528.96x = 12,166,674,155.44 - Step 5: Solve for x
x = 12,166,674,155.44/117,528.96 - Step 6: Final answer
x = 103,520.65
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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.