Finding the Fourth Proportional to 153,755.53, 212,177.82 and 90,135.70
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Solution
The fourth proportional to 153,755.53, 212,177.82 and 90,135.70 is: 124,384.45
Step by Step Solution
- Step 1: Write the proportion equation
153,755.53 : 212,177.82 = 90,135.70 : x - Step 2: Convert to fraction form
153,755.53/212,177.82 = 90,135.70/x - Step 3: Cross multiply
153,755.53x = 212,177.82 × 90,135.70 - Step 4: Simplify right side
153,755.53x = 19,124,796,330.17 - Step 5: Solve for x
x = 19,124,796,330.17/153,755.53 - Step 6: Final answer
x = 124,384.45
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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.