Finding the Fourth Proportional to 128,543.48, 192,479.88 and 103,446.44
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Solution
The fourth proportional to 128,543.48, 192,479.88 and 103,446.44 is: 154,899.79
Step by Step Solution
- Step 1: Write the proportion equation
128,543.48 : 192,479.88 = 103,446.44 : x - Step 2: Convert to fraction form
128,543.48/192,479.88 = 103,446.44/x - Step 3: Cross multiply
128,543.48x = 192,479.88 × 103,446.44 - Step 4: Simplify right side
128,543.48x = 19,911,358,357.63 - Step 5: Solve for x
x = 19,911,358,357.63/128,543.48 - Step 6: Final answer
x = 154,899.79
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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.