Finding the Fourth Proportional to 160,749.92, 221,831.12 and 89,129.28
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Solution
The fourth proportional to 160,749.92, 221,831.12 and 89,129.28 is: 122,996.32
Step by Step Solution
- Step 1: Write the proportion equation
160,749.92 : 221,831.12 = 89,129.28 : x - Step 2: Convert to fraction form
160,749.92/221,831.12 = 89,129.28/x - Step 3: Cross multiply
160,749.92x = 221,831.12 × 89,129.28 - Step 4: Simplify right side
160,749.92x = 19,771,648,007.19 - Step 5: Solve for x
x = 19,771,648,007.19/160,749.92 - Step 6: Final answer
x = 122,996.32
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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.