Finding the Fourth Proportional to 138,683.20, 207,885.92 and 68,613.44
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Solution
The fourth proportional to 138,683.20, 207,885.92 and 68,613.44 is: 102,851.45
Step by Step Solution
- Step 1: Write the proportion equation
138,683.20 : 207,885.92 = 68,613.44 : x - Step 2: Convert to fraction form
138,683.20/207,885.92 = 68,613.44/x - Step 3: Cross multiply
138,683.20x = 207,885.92 × 68,613.44 - Step 4: Simplify right side
138,683.20x = 14,263,768,098.76 - Step 5: Solve for x
x = 14,263,768,098.76/138,683.20 - Step 6: Final answer
x = 102,851.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.