Finding the Fourth Proportional to 113,702.97, 156,971.62 and 68,391.07
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Solution
The fourth proportional to 113,702.97, 156,971.62 and 68,391.07 is: 94,416.68
Step by Step Solution
- Step 1: Write the proportion equation
113,702.97 : 156,971.62 = 68,391.07 : x - Step 2: Convert to fraction form
113,702.97/156,971.62 = 68,391.07/x - Step 3: Cross multiply
113,702.97x = 156,971.62 × 68,391.07 - Step 4: Simplify right side
113,702.97x = 10,735,457,051.43 - Step 5: Solve for x
x = 10,735,457,051.43/113,702.97 - Step 6: Final answer
x = 94,416.68
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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.