Finding the Fourth Proportional to 105,126.93, 145,093.97 and 62,688.20
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Solution
The fourth proportional to 105,126.93, 145,093.97 and 62,688.20 is: 86,520.92
Step by Step Solution
- Step 1: Write the proportion equation
105,126.93 : 145,093.97 = 62,688.20 : x - Step 2: Convert to fraction form
105,126.93/145,093.97 = 62,688.20/x - Step 3: Cross multiply
105,126.93x = 145,093.97 × 62,688.20 - Step 4: Simplify right side
105,126.93x = 9,095,678,771.24 - Step 5: Solve for x
x = 9,095,678,771.24/105,126.93 - Step 6: Final answer
x = 86,520.92
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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.