Finding the Fourth Proportional to 163,312,648.20, 244,968,972.30 and 81,683,310.60
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Solution
The fourth proportional to 163,312,648.20, 244,968,972.30 and 81,683,310.60 is: 122,524,965.90
Step by Step Solution
- Step 1: Write the proportion equation
163,312,648.20 : 244,968,972.30 = 81,683,310.60 : x - Step 2: Convert to fraction form
163,312,648.20/244,968,972.30 = 81,683,310.60/x - Step 3: Cross multiply
163,312,648.20x = 244,968,972.30 × 81,683,310.60 - Step 4: Simplify right side
163,312,648.20x = 20,009,876,651,743,696 - Step 5: Solve for x
x = 20,009,876,651,743,696/163,312,648.20 - Step 6: Final answer
x = 122,524,965.90
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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.