Finding the Fourth Proportional to 189,297.47, 261,258.79 and 121,391.12
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Solution
The fourth proportional to 189,297.47, 261,258.79 and 121,391.12 is: 167,537.88
Step by Step Solution
- Step 1: Write the proportion equation
189,297.47 : 261,258.79 = 121,391.12 : x - Step 2: Convert to fraction form
189,297.47/261,258.79 = 121,391.12/x - Step 3: Cross multiply
189,297.47x = 261,258.79 × 121,391.12 - Step 4: Simplify right side
189,297.47x = 31,714,495,821.65 - Step 5: Solve for x
x = 31,714,495,821.65/189,297.47 - Step 6: Final answer
x = 167,537.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.