Finding the Fourth Proportional to 121,056.42, 181,450.11 and 91,378.02
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Solution
The fourth proportional to 121,056.42, 181,450.11 and 91,378.02 is: 136,965.49
Step by Step Solution
- Step 1: Write the proportion equation
121,056.42 : 181,450.11 = 91,378.02 : x - Step 2: Convert to fraction form
121,056.42/181,450.11 = 91,378.02/x - Step 3: Cross multiply
121,056.42x = 181,450.11 × 91,378.02 - Step 4: Simplify right side
121,056.42x = 16,580,551,780.58 - Step 5: Solve for x
x = 16,580,551,780.58/121,056.42 - Step 6: Final answer
x = 136,965.49
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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.