Finding the Fourth Proportional to 139,968,351.20, 209,952,526.80 and 49,101,125.60
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Solution
The fourth proportional to 139,968,351.20, 209,952,526.80 and 49,101,125.60 is: 73,651,688.40
Step by Step Solution
- Step 1: Write the proportion equation
139,968,351.20 : 209,952,526.80 = 49,101,125.60 : x - Step 2: Convert to fraction form
139,968,351.20/209,952,526.80 = 49,101,125.60/x - Step 3: Cross multiply
139,968,351.20x = 209,952,526.80 × 49,101,125.60 - Step 4: Simplify right side
139,968,351.20x = 10,308,905,388,444,166 - Step 5: Solve for x
x = 10,308,905,388,444,166/139,968,351.20 - Step 6: Final answer
x = 73,651,688.40
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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.