Finding the Fourth Proportional to 153,474.03, 211,790.97 and 85,490.91
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Solution
The fourth proportional to 153,474.03, 211,790.97 and 85,490.91 is: 117,975.68
Step by Step Solution
- Step 1: Write the proportion equation
153,474.03 : 211,790.97 = 85,490.91 : x - Step 2: Convert to fraction form
153,474.03/211,790.97 = 85,490.91/x - Step 3: Cross multiply
153,474.03x = 211,790.97 × 85,490.91 - Step 4: Simplify right side
153,474.03x = 18,106,202,755.08 - Step 5: Solve for x
x = 18,106,202,755.08/153,474.03 - Step 6: Final answer
x = 117,975.68
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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.