Finding the Fourth Proportional to 107,810.40, 161,331.60 and 68,386.40
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Solution
The fourth proportional to 107,810.40, 161,331.60 and 68,386.40 is: 102,336.02
Step by Step Solution
- Step 1: Write the proportion equation
107,810.40 : 161,331.60 = 68,386.40 : x - Step 2: Convert to fraction form
107,810.40/161,331.60 = 68,386.40/x - Step 3: Cross multiply
107,810.40x = 161,331.60 × 68,386.40 - Step 4: Simplify right side
107,810.40x = 11,032,887,330.24 - Step 5: Solve for x
x = 11,032,887,330.24/107,810.40 - Step 6: Final answer
x = 102,336.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.