Finding the Fourth Proportional to 129,698.48, 193,258.44 and 115,549.81
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Solution
The fourth proportional to 129,698.48, 193,258.44 and 115,549.81 is: 172,176.07
Step by Step Solution
- Step 1: Write the proportion equation
129,698.48 : 193,258.44 = 115,549.81 : x - Step 2: Convert to fraction form
129,698.48/193,258.44 = 115,549.81/x - Step 3: Cross multiply
129,698.48x = 193,258.44 × 115,549.81 - Step 4: Simplify right side
129,698.48x = 22,330,975,539.75 - Step 5: Solve for x
x = 22,330,975,539.75/129,698.48 - Step 6: Final answer
x = 172,176.07
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.