Finding the Fourth Proportional to 147,721.44, 203,831.55 and 87,283.68
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Solution
The fourth proportional to 147,721.44, 203,831.55 and 87,283.68 is: 120,437.28
Step by Step Solution
- Step 1: Write the proportion equation
147,721.44 : 203,831.55 = 87,283.68 : x - Step 2: Convert to fraction form
147,721.44/203,831.55 = 87,283.68/x - Step 3: Cross multiply
147,721.44x = 203,831.55 × 87,283.68 - Step 4: Simplify right side
147,721.44x = 17,791,167,784.10 - Step 5: Solve for x
x = 17,791,167,784.10/147,721.44 - Step 6: Final answer
x = 120,437.28
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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.