Finding the Fourth Proportional to 121,347,207.80, 182,020,811.70 and 70,202,900.60
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Solution
The fourth proportional to 121,347,207.80, 182,020,811.70 and 70,202,900.60 is: 105,304,350.90
Step by Step Solution
- Step 1: Write the proportion equation
121,347,207.80 : 182,020,811.70 = 70,202,900.60 : x - Step 2: Convert to fraction form
121,347,207.80/182,020,811.70 = 70,202,900.60/x - Step 3: Cross multiply
121,347,207.80x = 182,020,811.70 × 70,202,900.60 - Step 4: Simplify right side
121,347,207.80x = 12,778,388,950,906,416 - Step 5: Solve for x
x = 12,778,388,950,906,416/121,347,207.80 - Step 6: Final answer
x = 105,304,350.90
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1.5x scale
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.