Finding the Fourth Proportional to 157,004.12, 216,516.84 and 121,137.32
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Solution
The fourth proportional to 157,004.12, 216,516.84 and 121,137.32 is: 167,054.66
Step by Step Solution
- Step 1: Write the proportion equation
157,004.12 : 216,516.84 = 121,137.32 : x - Step 2: Convert to fraction form
157,004.12/216,516.84 = 121,137.32/x - Step 3: Cross multiply
157,004.12x = 216,516.84 × 121,137.32 - Step 4: Simplify right side
157,004.12x = 26,228,269,732.47 - Step 5: Solve for x
x = 26,228,269,732.47/157,004.12 - Step 6: Final answer
x = 167,054.66
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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.