Finding the Fourth Proportional to 143,779.36, 198,352.92 and 86,441.08
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Solution
The fourth proportional to 143,779.36, 198,352.92 and 86,441.08 is: 119,251.06
Step by Step Solution
- Step 1: Write the proportion equation
143,779.36 : 198,352.92 = 86,441.08 : x - Step 2: Convert to fraction form
143,779.36/198,352.92 = 86,441.08/x - Step 3: Cross multiply
143,779.36x = 198,352.92 × 86,441.08 - Step 4: Simplify right side
143,779.36x = 17,145,840,625.95 - Step 5: Solve for x
x = 17,145,840,625.95/143,779.36 - Step 6: Final answer
x = 119,251.06
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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.