Finding the Fourth Proportional to 157,531.36, 217,386.72 and 85,910.08
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Solution
The fourth proportional to 157,531.36, 217,386.72 and 85,910.08 is: 118,552.33
Step by Step Solution
- Step 1: Write the proportion equation
157,531.36 : 217,386.72 = 85,910.08 : x - Step 2: Convert to fraction form
157,531.36/217,386.72 = 85,910.08/x - Step 3: Cross multiply
157,531.36x = 217,386.72 × 85,910.08 - Step 4: Simplify right side
157,531.36x = 18,675,710,506.14 - Step 5: Solve for x
x = 18,675,710,506.14/157,531.36 - Step 6: Final answer
x = 118,552.33
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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.