Finding the Fourth Proportional to 153,181.13, 211,286.07 and 99,369.99
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Solution
The fourth proportional to 153,181.13, 211,286.07 and 99,369.99 is: 137,063.20
Step by Step Solution
- Step 1: Write the proportion equation
153,181.13 : 211,286.07 = 99,369.99 : x - Step 2: Convert to fraction form
153,181.13/211,286.07 = 99,369.99/x - Step 3: Cross multiply
153,181.13x = 211,286.07 × 99,369.99 - Step 4: Simplify right side
153,181.13x = 20,995,494,663.04 - Step 5: Solve for x
x = 20,995,494,663.04/153,181.13 - Step 6: Final answer
x = 137,063.20
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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.