Finding the Fourth Proportional to 157,348.13, 217,137.67 and 85,728.67
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Solution
The fourth proportional to 157,348.13, 217,137.67 and 85,728.67 is: 118,304.07
Step by Step Solution
- Step 1: Write the proportion equation
157,348.13 : 217,137.67 = 85,728.67 : x - Step 2: Convert to fraction form
157,348.13/217,137.67 = 85,728.67/x - Step 3: Cross multiply
157,348.13x = 217,137.67 × 85,728.67 - Step 4: Simplify right side
157,348.13x = 18,614,923,656.00 - Step 5: Solve for x
x = 18,614,923,656.00/157,348.13 - Step 6: Final answer
x = 118,304.07
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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.