Finding the Fourth Proportional to 121,235.70, 181,853.51 and 38,129.70
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Solution
The fourth proportional to 121,235.70, 181,853.51 and 38,129.70 is: 57,194.54
Step by Step Solution
- Step 1: Write the proportion equation
121,235.70 : 181,853.51 = 38,129.70 : x - Step 2: Convert to fraction form
121,235.70/181,853.51 = 38,129.70/x - Step 3: Cross multiply
121,235.70x = 181,853.51 × 38,129.70 - Step 4: Simplify right side
121,235.70x = 6,934,019,589.60 - Step 5: Solve for x
x = 6,934,019,589.60/121,235.70 - Step 6: Final answer
x = 57,194.54
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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.