Finding the Fourth Proportional to 130,791.72, 180,487.26 and 74,201.88
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Solution
The fourth proportional to 130,791.72, 180,487.26 and 74,201.88 is: 102,395.58
Step by Step Solution
- Step 1: Write the proportion equation
130,791.72 : 180,487.26 = 74,201.88 : x - Step 2: Convert to fraction form
130,791.72/180,487.26 = 74,201.88/x - Step 3: Cross multiply
130,791.72x = 180,487.26 × 74,201.88 - Step 4: Simplify right side
130,791.72x = 13,392,494,008.05 - Step 5: Solve for x
x = 13,392,494,008.05/130,791.72 - Step 6: Final answer
x = 102,395.58
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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.