Finding the Fourth Proportional to 140,455.13, 193,828.14 and 76,793.45
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Solution
The fourth proportional to 140,455.13, 193,828.14 and 76,793.45 is: 105,974.99
Step by Step Solution
- Step 1: Write the proportion equation
140,455.13 : 193,828.14 = 76,793.45 : x - Step 2: Convert to fraction form
140,455.13/193,828.14 = 76,793.45/x - Step 3: Cross multiply
140,455.13x = 193,828.14 × 76,793.45 - Step 4: Simplify right side
140,455.13x = 14,884,730,608.54 - Step 5: Solve for x
x = 14,884,730,608.54/140,455.13 - Step 6: Final answer
x = 105,974.99
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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.