Finding the Fourth Proportional to 125,840.42, 173,663.91 and 72,135.60
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Solution
The fourth proportional to 125,840.42, 173,663.91 and 72,135.60 is: 99,549.50
Step by Step Solution
- Step 1: Write the proportion equation
125,840.42 : 173,663.91 = 72,135.60 : x - Step 2: Convert to fraction form
125,840.42/173,663.91 = 72,135.60/x - Step 3: Cross multiply
125,840.42x = 173,663.91 × 72,135.60 - Step 4: Simplify right side
125,840.42x = 12,527,350,346.20 - Step 5: Solve for x
x = 12,527,350,346.20/125,840.42 - Step 6: Final answer
x = 99,549.50
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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.