Finding the Fourth Proportional to 221,671.10, 305,906.47 and 126,177.80
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Solution
The fourth proportional to 221,671.10, 305,906.47 and 126,177.80 is: 174,125.56
Step by Step Solution
- Step 1: Write the proportion equation
221,671.10 : 305,906.47 = 126,177.80 : x - Step 2: Convert to fraction form
221,671.10/305,906.47 = 126,177.80/x - Step 3: Cross multiply
221,671.10x = 305,906.47 × 126,177.80 - Step 4: Simplify right side
221,671.10x = 38,598,603,994.71 - Step 5: Solve for x
x = 38,598,603,994.71/221,671.10 - Step 6: Final answer
x = 174,125.56
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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.