Finding the Fourth Proportional to 139,529,708.40, 209,294,562.60 and 91,062,289.20
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Solution
The fourth proportional to 139,529,708.40, 209,294,562.60 and 91,062,289.20 is: 136,593,433.80
Step by Step Solution
- Step 1: Write the proportion equation
139,529,708.40 : 209,294,562.60 = 91,062,289.20 : x - Step 2: Convert to fraction form
139,529,708.40/209,294,562.60 = 91,062,289.20/x - Step 3: Cross multiply
139,529,708.40x = 209,294,562.60 × 91,062,289.20 - Step 4: Simplify right side
139,529,708.40x = 19,058,841,987,468,704 - Step 5: Solve for x
x = 19,058,841,987,468,704/139,529,708.40 - Step 6: Final answer
x = 136,593,433.80
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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.