Finding the Fourth Proportional to 143,873.12, 198,699.82 and 109,515.08
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Solution
The fourth proportional to 143,873.12, 198,699.82 and 109,515.08 is: 151,248.73
Step by Step Solution
- Step 1: Write the proportion equation
143,873.12 : 198,699.82 = 109,515.08 : x - Step 2: Convert to fraction form
143,873.12/198,699.82 = 109,515.08/x - Step 3: Cross multiply
143,873.12x = 198,699.82 × 109,515.08 - Step 4: Simplify right side
143,873.12x = 21,760,626,683.29 - Step 5: Solve for x
x = 21,760,626,683.29/143,873.12 - Step 6: Final answer
x = 151,248.73
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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.