Finding the Fourth Proportional to 147,042.70, 202,955.95 and 83,418.70
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Solution
The fourth proportional to 147,042.70, 202,955.95 and 83,418.70 is: 115,138.81
Step by Step Solution
- Step 1: Write the proportion equation
147,042.70 : 202,955.95 = 83,418.70 : x - Step 2: Convert to fraction form
147,042.70/202,955.95 = 83,418.70/x - Step 3: Cross multiply
147,042.70x = 202,955.95 × 83,418.70 - Step 4: Simplify right side
147,042.70x = 16,930,321,506.27 - Step 5: Solve for x
x = 16,930,321,506.27/147,042.70 - Step 6: Final answer
x = 115,138.81
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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.