Finding the Fourth Proportional to 139,968,263.20, 209,952,394.80 and 131,465,207.20
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Solution
The fourth proportional to 139,968,263.20, 209,952,394.80 and 131,465,207.20 is: 197,197,810.80
Step by Step Solution
- Step 1: Write the proportion equation
139,968,263.20 : 209,952,394.80 = 131,465,207.20 : x - Step 2: Convert to fraction form
139,968,263.20/209,952,394.80 = 131,465,207.20/x - Step 3: Cross multiply
139,968,263.20x = 209,952,394.80 × 131,465,207.20 - Step 4: Simplify right side
139,968,263.20x = 27,601,435,084,518,204 - Step 5: Solve for x
x = 27,601,435,084,518,204/139,968,263.20 - Step 6: Final answer
x = 197,197,810.80
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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.