Finding the Fourth Proportional to 140,354.19, 193,686.48 and 76,690.62
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Solution
The fourth proportional to 140,354.19, 193,686.48 and 76,690.62 is: 105,831.80
Step by Step Solution
- Step 1: Write the proportion equation
140,354.19 : 193,686.48 = 76,690.62 : x - Step 2: Convert to fraction form
140,354.19/193,686.48 = 76,690.62/x - Step 3: Cross multiply
140,354.19x = 193,686.48 × 76,690.62 - Step 4: Simplify right side
140,354.19x = 14,853,936,236.82 - Step 5: Solve for x
x = 14,853,936,236.82/140,354.19 - Step 6: Final answer
x = 105,831.80
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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.