Finding the Fourth Proportional to 131,373.12, 197,242.16 and 91,297.68
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Solution
The fourth proportional to 131,373.12, 197,242.16 and 91,297.68 is: 137,073.33
Step by Step Solution
- Step 1: Write the proportion equation
131,373.12 : 197,242.16 = 91,297.68 : x - Step 2: Convert to fraction form
131,373.12/197,242.16 = 91,297.68/x - Step 3: Cross multiply
131,373.12x = 197,242.16 × 91,297.68 - Step 4: Simplify right side
131,373.12x = 18,007,751,606.19 - Step 5: Solve for x
x = 18,007,751,606.19/131,373.12 - Step 6: Final answer
x = 137,073.33
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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.