Finding the Fourth Proportional to 121,181.80, 181,772.70 and 68,693.80
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Solution
The fourth proportional to 121,181.80, 181,772.70 and 68,693.80 is: 103,040.70
Step by Step Solution
- Step 1: Write the proportion equation
121,181.80 : 181,772.70 = 68,693.80 : x - Step 2: Convert to fraction form
121,181.80/181,772.70 = 68,693.80/x - Step 3: Cross multiply
121,181.80x = 181,772.70 × 68,693.80 - Step 4: Simplify right side
121,181.80x = 12,486,657,499.26 - Step 5: Solve for x
x = 12,486,657,499.26/121,181.80 - Step 6: Final answer
x = 103,040.70
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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.