Finding the Fourth Proportional to 139,968,159.70, 209,952,239.55 and 131,010,207.70
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Solution
The fourth proportional to 139,968,159.70, 209,952,239.55 and 131,010,207.70 is: 196,515,311.55
Step by Step Solution
- Step 1: Write the proportion equation
139,968,159.70 : 209,952,239.55 = 131,010,207.70 : x - Step 2: Convert to fraction form
139,968,159.70/209,952,239.55 = 131,010,207.70/x - Step 3: Cross multiply
139,968,159.70x = 209,952,239.55 × 131,010,207.70 - Step 4: Simplify right side
139,968,159.70x = 27,505,886,510,525,656 - Step 5: Solve for x
x = 27,505,886,510,525,656/139,968,159.70 - Step 6: Final answer
x = 196,515,311.55
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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.