Finding the Fourth Proportional to 143,990,921.08, 198,634,265.93 and 87,460,623.88
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Solution
The fourth proportional to 143,990,921.08, 198,634,265.93 and 87,460,623.88 is: 120,651,195.87
Step by Step Solution
- Step 1: Write the proportion equation
143,990,921.08 : 198,634,265.93 = 87,460,623.88 : x - Step 2: Convert to fraction form
143,990,921.08/198,634,265.93 = 87,460,623.88/x - Step 3: Cross multiply
143,990,921.08x = 198,634,265.93 × 87,460,623.88 - Step 4: Simplify right side
143,990,921.08x = 17,372,676,822,183,628 - Step 5: Solve for x
x = 17,372,676,822,183,628/143,990,921.08 - Step 6: Final answer
x = 120,651,195.87
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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.