Finding the Fourth Proportional to 156,428.80, 215,855.54 and 96,001.99
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Solution
The fourth proportional to 156,428.80, 215,855.54 and 96,001.99 is: 132,472.80
Step by Step Solution
- Step 1: Write the proportion equation
156,428.80 : 215,855.54 = 96,001.99 : x - Step 2: Convert to fraction form
156,428.80/215,855.54 = 96,001.99/x - Step 3: Cross multiply
156,428.80x = 215,855.54 × 96,001.99 - Step 4: Simplify right side
156,428.80x = 20,722,560,912.51 - Step 5: Solve for x
x = 20,722,560,912.51/156,428.80 - Step 6: Final answer
x = 132,472.80
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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.