Finding the Fourth Proportional to 157,013.18, 216,676.09 and 85,391.66
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Solution
The fourth proportional to 157,013.18, 216,676.09 and 85,391.66 is: 117,839.35
Step by Step Solution
- Step 1: Write the proportion equation
157,013.18 : 216,676.09 = 85,391.66 : x - Step 2: Convert to fraction form
157,013.18/216,676.09 = 85,391.66/x - Step 3: Cross multiply
157,013.18x = 216,676.09 × 85,391.66 - Step 4: Simplify right side
157,013.18x = 18,502,331,007.41 - Step 5: Solve for x
x = 18,502,331,007.41/157,013.18 - Step 6: Final answer
x = 117,839.35
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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.