Finding the Fourth Proportional to 216,138.20, 324,053.70 and 97,866.20
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Solution
The fourth proportional to 216,138.20, 324,053.70 and 97,866.20 is: 146,729.75
Step by Step Solution
- Step 1: Write the proportion equation
216,138.20 : 324,053.70 = 97,866.20 : x - Step 2: Convert to fraction form
216,138.20/324,053.70 = 97,866.20/x - Step 3: Cross multiply
216,138.20x = 324,053.70 × 97,866.20 - Step 4: Simplify right side
216,138.20x = 31,713,904,214.94 - Step 5: Solve for x
x = 31,713,904,214.94/216,138.20 - Step 6: Final answer
x = 146,729.75
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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.