Finding the Fourth Proportional to 153,872.04, 212,175.99 and 100,057.26
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Solution
The fourth proportional to 153,872.04, 212,175.99 and 100,057.26 is: 137,970.15
Step by Step Solution
- Step 1: Write the proportion equation
153,872.04 : 212,175.99 = 100,057.26 : x - Step 2: Convert to fraction form
153,872.04/212,175.99 = 100,057.26/x - Step 3: Cross multiply
153,872.04x = 212,175.99 × 100,057.26 - Step 4: Simplify right side
153,872.04x = 21,229,748,197.19 - Step 5: Solve for x
x = 21,229,748,197.19/153,872.04 - Step 6: Final answer
x = 137,970.15
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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.