Finding the Fourth Proportional to 199,621,185.12, 275,461,860.72 and 112,709,635.68
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Solution
The fourth proportional to 199,621,185.12, 275,461,860.72 and 112,709,635.68 is: 155,530,616.39
Step by Step Solution
- Step 1: Write the proportion equation
199,621,185.12 : 275,461,860.72 = 112,709,635.68 : x - Step 2: Convert to fraction form
199,621,185.12/275,461,860.72 = 112,709,635.68/x - Step 3: Cross multiply
199,621,185.12x = 275,461,860.72 × 112,709,635.68 - Step 4: Simplify right side
199,621,185.12x = 31,047,205,965,486,108 - Step 5: Solve for x
x = 31,047,205,965,486,108/199,621,185.12 - Step 6: Final answer
x = 155,530,616.39
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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.