Finding the Fourth Proportional to 99,828.26, 149,287.58 and 74,545.53
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Solution
The fourth proportional to 99,828.26, 149,287.58 and 74,545.53 is: 111,478.67
Step by Step Solution
- Step 1: Write the proportion equation
99,828.26 : 149,287.58 = 74,545.53 : x - Step 2: Convert to fraction form
99,828.26/149,287.58 = 74,545.53/x - Step 3: Cross multiply
99,828.26x = 149,287.58 × 74,545.53 - Step 4: Simplify right side
99,828.26x = 11,128,721,400.79 - Step 5: Solve for x
x = 11,128,721,400.79/99,828.26 - Step 6: Final answer
x = 111,478.67
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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.