Finding the Fourth Proportional to 139,968,562.20, 209,952,843.30 and 125,859,787.80
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Solution
The fourth proportional to 139,968,562.20, 209,952,843.30 and 125,859,787.80 is: 188,789,681.70
Step by Step Solution
- Step 1: Write the proportion equation
139,968,562.20 : 209,952,843.30 = 125,859,787.80 : x - Step 2: Convert to fraction form
139,968,562.20/209,952,843.30 = 125,859,787.80/x - Step 3: Cross multiply
139,968,562.20x = 209,952,843.30 × 125,859,787.80 - Step 4: Simplify right side
139,968,562.20x = 26,424,620,305,744,652 - Step 5: Solve for x
x = 26,424,620,305,744,652/139,968,562.20 - Step 6: Final answer
x = 188,789,681.70
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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.