Finding the Fourth Proportional to 166,485,919.20, 249,728,878.80 and 163,616,137.80
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Solution
The fourth proportional to 166,485,919.20, 249,728,878.80 and 163,616,137.80 is: 245,424,206.70
Step by Step Solution
- Step 1: Write the proportion equation
166,485,919.20 : 249,728,878.80 = 163,616,137.80 : x - Step 2: Convert to fraction form
166,485,919.20/249,728,878.80 = 163,616,137.80/x - Step 3: Cross multiply
166,485,919.20x = 249,728,878.80 × 163,616,137.80 - Step 4: Simplify right side
166,485,919.20x = 40,859,674,646,380,304 - Step 5: Solve for x
x = 40,859,674,646,380,304/166,485,919.20 - Step 6: Final answer
x = 245,424,206.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.