Finding the Fourth Proportional to 128,882.05, 177,852.58 and 71,523.88
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Solution
The fourth proportional to 128,882.05, 177,852.58 and 71,523.88 is: 98,700.37
Step by Step Solution
- Step 1: Write the proportion equation
128,882.05 : 177,852.58 = 71,523.88 : x - Step 2: Convert to fraction form
128,882.05/177,852.58 = 71,523.88/x - Step 3: Cross multiply
128,882.05x = 177,852.58 × 71,523.88 - Step 4: Simplify right side
128,882.05x = 12,720,705,966.17 - Step 5: Solve for x
x = 12,720,705,966.17/128,882.05 - Step 6: Final answer
x = 98,700.37
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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.