Finding the Fourth Proportional to 217,147.98, 299,695.86 and 121,661.13
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Solution
The fourth proportional to 217,147.98, 299,695.86 and 121,661.13 is: 167,910.09
Step by Step Solution
- Step 1: Write the proportion equation
217,147.98 : 299,695.86 = 121,661.13 : x - Step 2: Convert to fraction form
217,147.98/299,695.86 = 121,661.13/x - Step 3: Cross multiply
217,147.98x = 299,695.86 × 121,661.13 - Step 4: Simplify right side
217,147.98x = 36,461,336,983.92 - Step 5: Solve for x
x = 36,461,336,983.92/217,147.98 - Step 6: Final answer
x = 167,910.09
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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.