Finding the Fourth Proportional to 153,414.93, 211,661.87 and 89,707.62
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Solution
The fourth proportional to 153,414.93, 211,661.87 and 89,707.62 is: 123,766.85
Step by Step Solution
- Step 1: Write the proportion equation
153,414.93 : 211,661.87 = 89,707.62 : x - Step 2: Convert to fraction form
153,414.93/211,661.87 = 89,707.62/x - Step 3: Cross multiply
153,414.93x = 211,661.87 × 89,707.62 - Step 4: Simplify right side
153,414.93x = 18,987,682,153.91 - Step 5: Solve for x
x = 18,987,682,153.91/153,414.93 - Step 6: Final answer
x = 123,766.85
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1.5x scale
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.