Finding the Fourth Proportional to 192,139.18, 288,219.28 and 79,830.75
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Solution
The fourth proportional to 192,139.18, 288,219.28 and 79,830.75 is: 119,750.49
Step by Step Solution
- Step 1: Write the proportion equation
192,139.18 : 288,219.28 = 79,830.75 : x - Step 2: Convert to fraction form
192,139.18/288,219.28 = 79,830.75/x - Step 3: Cross multiply
192,139.18x = 288,219.28 × 79,830.75 - Step 4: Simplify right side
192,139.18x = 23,008,760,887.71 - Step 5: Solve for x
x = 23,008,760,887.71/192,139.18 - Step 6: Final answer
x = 119,750.49
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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.