Finding the Fourth Proportional to 124,160.44, 171,289.14 and 78,138.56
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Solution
The fourth proportional to 124,160.44, 171,289.14 and 78,138.56 is: 107,798.32
Step by Step Solution
- Step 1: Write the proportion equation
124,160.44 : 171,289.14 = 78,138.56 : x - Step 2: Convert to fraction form
124,160.44/171,289.14 = 78,138.56/x - Step 3: Cross multiply
124,160.44x = 171,289.14 × 78,138.56 - Step 4: Simplify right side
124,160.44x = 13,384,286,743.24 - Step 5: Solve for x
x = 13,384,286,743.24/124,160.44 - Step 6: Final answer
x = 107,798.32
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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.