Finding the Fourth Proportional to 104,901.28, 144,765.42 and 57,154.62
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Solution
The fourth proportional to 104,901.28, 144,765.42 and 57,154.62 is: 78,874.28
Step by Step Solution
- Step 1: Write the proportion equation
104,901.28 : 144,765.42 = 57,154.62 : x - Step 2: Convert to fraction form
104,901.28/144,765.42 = 57,154.62/x - Step 3: Cross multiply
104,901.28x = 144,765.42 × 57,154.62 - Step 4: Simplify right side
104,901.28x = 8,274,012,569.24 - Step 5: Solve for x
x = 8,274,012,569.24/104,901.28 - Step 6: Final answer
x = 78,874.28
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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.