Finding the Fourth Proportional to 221,713.96, 305,953.86 and 121,092.52
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Solution
The fourth proportional to 221,713.96, 305,953.86 and 121,092.52 is: 167,101.45
Step by Step Solution
- Step 1: Write the proportion equation
221,713.96 : 305,953.86 = 121,092.52 : x - Step 2: Convert to fraction form
221,713.96/305,953.86 = 121,092.52/x - Step 3: Cross multiply
221,713.96x = 305,953.86 × 121,092.52 - Step 4: Simplify right side
221,713.96x = 37,048,723,911.13 - Step 5: Solve for x
x = 37,048,723,911.13/221,713.96 - Step 6: Final answer
x = 167,101.45
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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.