Finding the Fourth Proportional to 147,772.80, 221,659.20 and 128,527.20
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Solution
The fourth proportional to 147,772.80, 221,659.20 and 128,527.20 is: 192,790.80
Step by Step Solution
- Step 1: Write the proportion equation
147,772.80 : 221,659.20 = 128,527.20 : x - Step 2: Convert to fraction form
147,772.80/221,659.20 = 128,527.20/x - Step 3: Cross multiply
147,772.80x = 221,659.20 × 128,527.20 - Step 4: Simplify right side
147,772.80x = 28,489,236,330.24 - Step 5: Solve for x
x = 28,489,236,330.24/147,772.80 - Step 6: Final answer
x = 192,790.80
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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.