Finding the Fourth Proportional to 121,143,907.80, 181,715,861.70 and 56,426,203.80
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Solution
The fourth proportional to 121,143,907.80, 181,715,861.70 and 56,426,203.80 is: 84,639,305.70
Step by Step Solution
- Step 1: Write the proportion equation
121,143,907.80 : 181,715,861.70 = 56,426,203.80 : x - Step 2: Convert to fraction form
121,143,907.80/181,715,861.70 = 56,426,203.80/x - Step 3: Cross multiply
121,143,907.80x = 181,715,861.70 × 56,426,203.80 - Step 4: Simplify right side
121,143,907.80x = 10,253,536,245,976,814 - Step 5: Solve for x
x = 10,253,536,245,976,814/121,143,907.80 - Step 6: Final answer
x = 84,639,305.70
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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.