Finding the Fourth Proportional to 153,021.77, 211,175.18 and 85,041.62
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Solution
The fourth proportional to 153,021.77, 211,175.18 and 85,041.62 is: 117,360.28
Step by Step Solution
- Step 1: Write the proportion equation
153,021.77 : 211,175.18 = 85,041.62 : x - Step 2: Convert to fraction form
153,021.77/211,175.18 = 85,041.62/x - Step 3: Cross multiply
153,021.77x = 211,175.18 × 85,041.62 - Step 4: Simplify right side
153,021.77x = 17,958,677,929.91 - Step 5: Solve for x
x = 17,958,677,929.91/153,021.77 - Step 6: Final answer
x = 117,360.28
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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.