Finding the Fourth Proportional to 153,021.80, 229,532.70 and 135,963.20
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Solution
The fourth proportional to 153,021.80, 229,532.70 and 135,963.20 is: 203,944.80
Step by Step Solution
- Step 1: Write the proportion equation
153,021.80 : 229,532.70 = 135,963.20 : x - Step 2: Convert to fraction form
153,021.80/229,532.70 = 135,963.20/x - Step 3: Cross multiply
153,021.80x = 229,532.70 × 135,963.20 - Step 4: Simplify right side
153,021.80x = 31,208,000,396.64 - Step 5: Solve for x
x = 31,208,000,396.64/153,021.80 - Step 6: Final answer
x = 203,944.80
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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.