Finding the Fourth Proportional to 187,478.08, 258,679.74 and 111,021.19
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Solution
The fourth proportional to 187,478.08, 258,679.74 and 111,021.19 is: 153,185.55
Step by Step Solution
- Step 1: Write the proportion equation
187,478.08 : 258,679.74 = 111,021.19 : x - Step 2: Convert to fraction form
187,478.08/258,679.74 = 111,021.19/x - Step 3: Cross multiply
187,478.08x = 258,679.74 × 111,021.19 - Step 4: Simplify right side
187,478.08x = 28,718,932,563.69 - Step 5: Solve for x
x = 28,718,932,563.69/187,478.08 - Step 6: Final answer
x = 153,185.55
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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.