Finding the Fourth Proportional to 138,409.05, 207,613.71 and 38,569.53
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Solution
The fourth proportional to 138,409.05, 207,613.71 and 38,569.53 is: 57,854.33
Step by Step Solution
- Step 1: Write the proportion equation
138,409.05 : 207,613.71 = 38,569.53 : x - Step 2: Convert to fraction form
138,409.05/207,613.71 = 38,569.53/x - Step 3: Cross multiply
138,409.05x = 207,613.71 × 38,569.53 - Step 4: Simplify right side
138,409.05x = 8,007,563,216.26 - Step 5: Solve for x
x = 8,007,563,216.26/138,409.05 - Step 6: Final answer
x = 57,854.33
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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.