Finding the Fourth Proportional to 128,849.80, 193,274.70 and 120,101.80
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Solution
The fourth proportional to 128,849.80, 193,274.70 and 120,101.80 is: 180,152.70
Step by Step Solution
- Step 1: Write the proportion equation
128,849.80 : 193,274.70 = 120,101.80 : x - Step 2: Convert to fraction form
128,849.80/193,274.70 = 120,101.80/x - Step 3: Cross multiply
128,849.80x = 193,274.70 × 120,101.80 - Step 4: Simplify right side
128,849.80x = 23,212,639,364.46 - Step 5: Solve for x
x = 23,212,639,364.46/128,849.80 - Step 6: Final answer
x = 180,152.70
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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.