Finding the Fourth Proportional to 121,203.70, 181,805.55 and 47,331.70
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Solution
The fourth proportional to 121,203.70, 181,805.55 and 47,331.70 is: 70,997.55
Step by Step Solution
- Step 1: Write the proportion equation
121,203.70 : 181,805.55 = 47,331.70 : x - Step 2: Convert to fraction form
121,203.70/181,805.55 = 47,331.70/x - Step 3: Cross multiply
121,203.70x = 181,805.55 × 47,331.70 - Step 4: Simplify right side
121,203.70x = 8,605,165,750.94 - Step 5: Solve for x
x = 8,605,165,750.94/121,203.70 - Step 6: Final answer
x = 70,997.55
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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.