Finding the Fourth Proportional to 121,186.80, 181,416.51 and 73,655.19
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Solution
The fourth proportional to 121,186.80, 181,416.51 and 73,655.19 is: 110,261.74
Step by Step Solution
- Step 1: Write the proportion equation
121,186.80 : 181,416.51 = 73,655.19 : x - Step 2: Convert to fraction form
121,186.80/181,416.51 = 73,655.19/x - Step 3: Cross multiply
121,186.80x = 181,416.51 × 73,655.19 - Step 4: Simplify right side
121,186.80x = 13,362,267,513.19 - Step 5: Solve for x
x = 13,362,267,513.19/121,186.80 - Step 6: Final answer
x = 110,261.74
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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.