Finding the Fourth Proportional to 153,877.73, 212,386.68 and 90,236.03
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Solution
The fourth proportional to 153,877.73, 212,386.68 and 90,236.03 is: 124,546.48
Step by Step Solution
- Step 1: Write the proportion equation
153,877.73 : 212,386.68 = 90,236.03 : x - Step 2: Convert to fraction form
153,877.73/212,386.68 = 90,236.03/x - Step 3: Cross multiply
153,877.73x = 212,386.68 × 90,236.03 - Step 4: Simplify right side
153,877.73x = 19,164,929,766.15 - Step 5: Solve for x
x = 19,164,929,766.15/153,877.73 - Step 6: Final answer
x = 124,546.48
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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.