Finding the Fourth Proportional to 140,329.74, 193,859.94 and 121,434.06
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Solution
The fourth proportional to 140,329.74, 193,859.94 and 121,434.06 is: 167,756.31
Step by Step Solution
- Step 1: Write the proportion equation
140,329.74 : 193,859.94 = 121,434.06 : x - Step 2: Convert to fraction form
140,329.74/193,859.94 = 121,434.06/x - Step 3: Cross multiply
140,329.74x = 193,859.94 × 121,434.06 - Step 4: Simplify right side
140,329.74x = 23,541,199,585.56 - Step 5: Solve for x
x = 23,541,199,585.56/140,329.74 - Step 6: Final answer
x = 167,756.31
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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.