Finding the Fourth Proportional to 153,729.99, 212,148.17 and 84,821.84
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Solution
The fourth proportional to 153,729.99, 212,148.17 and 84,821.84 is: 117,054.56
Step by Step Solution
- Step 1: Write the proportion equation
153,729.99 : 212,148.17 = 84,821.84 : x - Step 2: Convert to fraction form
153,729.99/212,148.17 = 84,821.84/x - Step 3: Cross multiply
153,729.99x = 212,148.17 × 84,821.84 - Step 4: Simplify right side
153,729.99x = 17,994,797,298.38 - Step 5: Solve for x
x = 17,994,797,298.38/153,729.99 - Step 6: Final answer
x = 117,054.56
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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.