Finding the Fourth Proportional to 121,576.78, 167,803.96 and 71,291.98
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Solution
The fourth proportional to 121,576.78, 167,803.96 and 71,291.98 is: 98,399.35
Step by Step Solution
- Step 1: Write the proportion equation
121,576.78 : 167,803.96 = 71,291.98 : x - Step 2: Convert to fraction form
121,576.78/167,803.96 = 71,291.98/x - Step 3: Cross multiply
121,576.78x = 167,803.96 × 71,291.98 - Step 4: Simplify right side
121,576.78x = 11,963,076,560.24 - Step 5: Solve for x
x = 11,963,076,560.24/121,576.78 - Step 6: Final answer
x = 98,399.35
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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.