Finding the Fourth Proportional to 143,701.70, 198,205.99 and 98,381.59
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Solution
The fourth proportional to 143,701.70, 198,205.99 and 98,381.59 is: 135,696.52
Step by Step Solution
- Step 1: Write the proportion equation
143,701.70 : 198,205.99 = 98,381.59 : x - Step 2: Convert to fraction form
143,701.70/198,205.99 = 98,381.59/x - Step 3: Cross multiply
143,701.70x = 198,205.99 × 98,381.59 - Step 4: Simplify right side
143,701.70x = 19,499,819,702.26 - Step 5: Solve for x
x = 19,499,819,702.26/143,701.70 - Step 6: Final answer
x = 135,696.52
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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.