Finding the Fourth Proportional to 121,213.97, 181,620.47 and 61,968.14
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Solution
The fourth proportional to 121,213.97, 181,620.47 and 61,968.14 is: 92,849.71
Step by Step Solution
- Step 1: Write the proportion equation
121,213.97 : 181,620.47 = 61,968.14 : x - Step 2: Convert to fraction form
121,213.97/181,620.47 = 61,968.14/x - Step 3: Cross multiply
121,213.97x = 181,620.47 × 61,968.14 - Step 4: Simplify right side
121,213.97x = 11,254,681,493.88 - Step 5: Solve for x
x = 11,254,681,493.88/121,213.97 - Step 6: Final answer
x = 92,849.71
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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.