Finding the Fourth Proportional to 143,623.84, 198,207.44 and 79,965.68
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Solution
The fourth proportional to 143,623.84, 198,207.44 and 79,965.68 is: 110,356.28
Step by Step Solution
- Step 1: Write the proportion equation
143,623.84 : 198,207.44 = 79,965.68 : x - Step 2: Convert to fraction form
143,623.84/198,207.44 = 79,965.68/x - Step 3: Cross multiply
143,623.84x = 198,207.44 × 79,965.68 - Step 4: Simplify right side
143,623.84x = 15,849,792,720.66 - Step 5: Solve for x
x = 15,849,792,720.66/143,623.84 - Step 6: Final answer
x = 110,356.28
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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.