Finding the Fourth Proportional to 153,107.44, 211,293.66 and 85,143.68
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Solution
The fourth proportional to 153,107.44, 211,293.66 and 85,143.68 is: 117,501.28
Step by Step Solution
- Step 1: Write the proportion equation
153,107.44 : 211,293.66 = 85,143.68 : x - Step 2: Convert to fraction form
153,107.44/211,293.66 = 85,143.68/x - Step 3: Cross multiply
153,107.44x = 211,293.66 × 85,143.68 - Step 4: Simplify right side
153,107.44x = 17,990,319,773.07 - Step 5: Solve for x
x = 17,990,319,773.07/153,107.44 - Step 6: Final answer
x = 117,501.28
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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.