Finding the Fourth Proportional to 143,823.74, 198,477.68 and 80,165.57
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Solution
The fourth proportional to 143,823.74, 198,477.68 and 80,165.57 is: 110,628.99
Step by Step Solution
- Step 1: Write the proportion equation
143,823.74 : 198,477.68 = 80,165.57 : x - Step 2: Convert to fraction form
143,823.74/198,477.68 = 80,165.57/x - Step 3: Cross multiply
143,823.74x = 198,477.68 × 80,165.57 - Step 4: Simplify right side
143,823.74x = 15,911,074,956.26 - Step 5: Solve for x
x = 15,911,074,956.26/143,823.74 - Step 6: Final answer
x = 110,628.99
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1.5x scale
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.