Finding the Fourth Proportional to 126,356.19, 174,371.43 and 72,651.70
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Solution
The fourth proportional to 126,356.19, 174,371.43 and 72,651.70 is: 100,259.28
Step by Step Solution
- Step 1: Write the proportion equation
126,356.19 : 174,371.43 = 72,651.70 : x - Step 2: Convert to fraction form
126,356.19/174,371.43 = 72,651.70/x - Step 3: Cross multiply
126,356.19x = 174,371.43 × 72,651.70 - Step 4: Simplify right side
126,356.19x = 12,668,380,820.93 - Step 5: Solve for x
x = 12,668,380,820.93/126,356.19 - Step 6: Final answer
x = 100,259.28
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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.