Finding the Fourth Proportional to 113,739.75, 156,960.86 and 63,438.75
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Solution
The fourth proportional to 113,739.75, 156,960.86 and 63,438.75 is: 87,545.48
Step by Step Solution
- Step 1: Write the proportion equation
113,739.75 : 156,960.86 = 63,438.75 : x - Step 2: Convert to fraction form
113,739.75/156,960.86 = 63,438.75/x - Step 3: Cross multiply
113,739.75x = 156,960.86 × 63,438.75 - Step 4: Simplify right side
113,739.75x = 9,957,400,440.13 - Step 5: Solve for x
x = 9,957,400,440.13/113,739.75 - Step 6: Final answer
x = 87,545.48
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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.