Finding the Fourth Proportional to 140,383.24, 193,742.21 and 76,730.60
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Solution
The fourth proportional to 140,383.24, 193,742.21 and 76,730.60 is: 105,895.52
Step by Step Solution
- Step 1: Write the proportion equation
140,383.24 : 193,742.21 = 76,730.60 : x - Step 2: Convert to fraction form
140,383.24/193,742.21 = 76,730.60/x - Step 3: Cross multiply
140,383.24x = 193,742.21 × 76,730.60 - Step 4: Simplify right side
140,383.24x = 14,865,956,018.63 - Step 5: Solve for x
x = 14,865,956,018.63/140,383.24 - Step 6: Final answer
x = 105,895.52
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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.