Finding the Fourth Proportional to 142,002.99, 211,841.57 and 138,142.02
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Solution
The fourth proportional to 142,002.99, 211,841.57 and 138,142.02 is: 206,081.74
Step by Step Solution
- Step 1: Write the proportion equation
142,002.99 : 211,841.57 = 138,142.02 : x - Step 2: Convert to fraction form
142,002.99/211,841.57 = 138,142.02/x - Step 3: Cross multiply
142,002.99x = 211,841.57 × 138,142.02 - Step 4: Simplify right side
142,002.99x = 29,264,222,745.13 - Step 5: Solve for x
x = 29,264,222,745.13/142,002.99 - Step 6: Final answer
x = 206,081.74
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.