Finding the Fourth Proportional to 142,831.25, 214,397.53 and 139,614.26
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Solution
The fourth proportional to 142,831.25, 214,397.53 and 139,614.26 is: 209,568.65
Step by Step Solution
- Step 1: Write the proportion equation
142,831.25 : 214,397.53 = 139,614.26 : x - Step 2: Convert to fraction form
142,831.25/214,397.53 = 139,614.26/x - Step 3: Cross multiply
142,831.25x = 214,397.53 × 139,614.26 - Step 4: Simplify right side
142,831.25x = 29,932,951,798.71 - Step 5: Solve for x
x = 29,932,951,798.71/142,831.25 - Step 6: Final answer
x = 209,568.65
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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.