Finding the Fourth Proportional to 157,328.94, 217,113.09 and 85,708.80
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Solution
The fourth proportional to 157,328.94, 217,113.09 and 85,708.80 is: 118,277.68
Step by Step Solution
- Step 1: Write the proportion equation
157,328.94 : 217,113.09 = 85,708.80 : x - Step 2: Convert to fraction form
157,328.94/217,113.09 = 85,708.80/x - Step 3: Cross multiply
157,328.94x = 217,113.09 × 85,708.80 - Step 4: Simplify right side
157,328.94x = 18,608,502,408.19 - Step 5: Solve for x
x = 18,608,502,408.19/157,328.94 - Step 6: Final answer
x = 118,277.68
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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.