Finding the Fourth Proportional to 128,627.76, 192,941.74 and 53,707.08
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Solution
The fourth proportional to 128,627.76, 192,941.74 and 53,707.08 is: 80,560.66
Step by Step Solution
- Step 1: Write the proportion equation
128,627.76 : 192,941.74 = 53,707.08 : x - Step 2: Convert to fraction form
128,627.76/192,941.74 = 53,707.08/x - Step 3: Cross multiply
128,627.76x = 192,941.74 × 53,707.08 - Step 4: Simplify right side
128,627.76x = 10,362,337,465.52 - Step 5: Solve for x
x = 10,362,337,465.52/128,627.76 - Step 6: Final answer
x = 80,560.66
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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.