Finding the Fourth Proportional to 116,649.81, 160,980.36 and 66,352.05
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Solution
The fourth proportional to 116,649.81, 160,980.36 and 66,352.05 is: 91,567.89
Step by Step Solution
- Step 1: Write the proportion equation
116,649.81 : 160,980.36 = 66,352.05 : x - Step 2: Convert to fraction form
116,649.81/160,980.36 = 66,352.05/x - Step 3: Cross multiply
116,649.81x = 160,980.36 × 66,352.05 - Step 4: Simplify right side
116,649.81x = 10,681,376,895.74 - Step 5: Solve for x
x = 10,681,376,895.74/116,649.81 - Step 6: Final answer
x = 91,567.89
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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.