Finding the Fourth Proportional to 143,650.62, 198,237.74 and 79,120.31
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Solution
The fourth proportional to 143,650.62, 198,237.74 and 79,120.31 is: 109,185.95
Step by Step Solution
- Step 1: Write the proportion equation
143,650.62 : 198,237.74 = 79,120.31 : x - Step 2: Convert to fraction form
143,650.62/198,237.74 = 79,120.31/x - Step 3: Cross multiply
143,650.62x = 198,237.74 × 79,120.31 - Step 4: Simplify right side
143,650.62x = 15,684,630,055.71 - Step 5: Solve for x
x = 15,684,630,055.71/143,650.62 - Step 6: Final answer
x = 109,185.95
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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.