Finding the Fourth Proportional to 125,347.34, 172,991.77 and 71,640.09
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Solution
The fourth proportional to 125,347.34, 172,991.77 and 71,640.09 is: 98,870.43
Step by Step Solution
- Step 1: Write the proportion equation
125,347.34 : 172,991.77 = 71,640.09 : x - Step 2: Convert to fraction form
125,347.34/172,991.77 = 71,640.09/x - Step 3: Cross multiply
125,347.34x = 172,991.77 × 71,640.09 - Step 4: Simplify right side
125,347.34x = 12,393,145,792.96 - Step 5: Solve for x
x = 12,393,145,792.96/125,347.34 - Step 6: Final answer
x = 98,870.43
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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.