Finding the Fourth Proportional to 189,178.41, 260,918.58 and 121,201.71
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Solution
The fourth proportional to 189,178.41, 260,918.58 and 121,201.71 is: 167,163.78
Step by Step Solution
- Step 1: Write the proportion equation
189,178.41 : 260,918.58 = 121,201.71 : x - Step 2: Convert to fraction form
189,178.41/260,918.58 = 121,201.71/x - Step 3: Cross multiply
189,178.41x = 260,918.58 × 121,201.71 - Step 4: Simplify right side
189,178.41x = 31,623,778,066.77 - Step 5: Solve for x
x = 31,623,778,066.77/189,178.41 - Step 6: Final answer
x = 167,163.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.