Finding the Fourth Proportional to 121,239.70, 181,859.50 and 38,133.70
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Solution
The fourth proportional to 121,239.70, 181,859.50 and 38,133.70 is: 57,200.53
Step by Step Solution
- Step 1: Write the proportion equation
121,239.70 : 181,859.50 = 38,133.70 : x - Step 2: Convert to fraction form
121,239.70/181,859.50 = 38,133.70/x - Step 3: Cross multiply
121,239.70x = 181,859.50 × 38,133.70 - Step 4: Simplify right side
121,239.70x = 6,934,975,615.15 - Step 5: Solve for x
x = 6,934,975,615.15/121,239.70 - Step 6: Final answer
x = 57,200.53
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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.