Finding the Fourth Proportional to 135,645.70, 203,468.55 and 128,733.70
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Solution
The fourth proportional to 135,645.70, 203,468.55 and 128,733.70 is: 193,100.55
Step by Step Solution
- Step 1: Write the proportion equation
135,645.70 : 203,468.55 = 128,733.70 : x - Step 2: Convert to fraction form
135,645.70/203,468.55 = 128,733.70/x - Step 3: Cross multiply
135,645.70x = 203,468.55 × 128,733.70 - Step 4: Simplify right side
135,645.70x = 26,193,259,275.14 - Step 5: Solve for x
x = 26,193,259,275.14/135,645.70 - Step 6: Final answer
x = 193,100.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.