Finding the Fourth Proportional to 138,512.70, 191,102.63 and 84,741.66
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Solution
The fourth proportional to 138,512.70, 191,102.63 and 84,741.66 is: 116,916.02
Step by Step Solution
- Step 1: Write the proportion equation
138,512.70 : 191,102.63 = 84,741.66 : x - Step 2: Convert to fraction form
138,512.70/191,102.63 = 84,741.66/x - Step 3: Cross multiply
138,512.70x = 191,102.63 × 84,741.66 - Step 4: Simplify right side
138,512.70x = 16,194,353,672.86 - Step 5: Solve for x
x = 16,194,353,672.86/138,512.70 - Step 6: Final answer
x = 116,916.02
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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.