Finding the Fourth Proportional to 121,381.70, 181,975.35 and 51,203.30
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Solution
The fourth proportional to 121,381.70, 181,975.35 and 51,203.30 is: 76,763.95
Step by Step Solution
- Step 1: Write the proportion equation
121,381.70 : 181,975.35 = 51,203.30 : x - Step 2: Convert to fraction form
121,381.70/181,975.35 = 51,203.30/x - Step 3: Cross multiply
121,381.70x = 181,975.35 × 51,203.30 - Step 4: Simplify right side
121,381.70x = 9,317,738,438.66 - Step 5: Solve for x
x = 9,317,738,438.66/121,381.70 - Step 6: Final answer
x = 76,763.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.