Finding the Fourth Proportional to 117,266.88, 161,730.24 and 76,949.28
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Solution
The fourth proportional to 117,266.88, 161,730.24 and 76,949.28 is: 106,125.66
Step by Step Solution
- Step 1: Write the proportion equation
117,266.88 : 161,730.24 = 76,949.28 : x - Step 2: Convert to fraction form
117,266.88/161,730.24 = 76,949.28/x - Step 3: Cross multiply
117,266.88x = 161,730.24 × 76,949.28 - Step 4: Simplify right side
117,266.88x = 12,445,025,522.23 - Step 5: Solve for x
x = 12,445,025,522.23/117,266.88 - Step 6: Final answer
x = 106,125.66
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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.