Finding the Fourth Proportional to 121,157.91, 181,618.74 and 57,961.53
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Solution
The fourth proportional to 121,157.91, 181,618.74 and 57,961.53 is: 86,885.78
Step by Step Solution
- Step 1: Write the proportion equation
121,157.91 : 181,618.74 = 57,961.53 : x - Step 2: Convert to fraction form
121,157.91/181,618.74 = 57,961.53/x - Step 3: Cross multiply
121,157.91x = 181,618.74 × 57,961.53 - Step 4: Simplify right side
121,157.91x = 10,526,900,047.07 - Step 5: Solve for x
x = 10,526,900,047.07/121,157.91 - Step 6: Final answer
x = 86,885.78
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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.