Finding the Fourth Proportional to 121,005.42, 181,373.58 and 91,327.02
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Solution
The fourth proportional to 121,005.42, 181,373.58 and 91,327.02 is: 136,888.98
Step by Step Solution
- Step 1: Write the proportion equation
121,005.42 : 181,373.58 = 91,327.02 : x - Step 2: Convert to fraction form
121,005.42/181,373.58 = 91,327.02/x - Step 3: Cross multiply
121,005.42x = 181,373.58 × 91,327.02 - Step 4: Simplify right side
121,005.42x = 16,564,308,568.13 - Step 5: Solve for x
x = 16,564,308,568.13/121,005.42 - Step 6: Final answer
x = 136,888.98
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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.