Finding the Fourth Proportional to 86,206,866.80, 129,310,300.20 and 81,955,338.80
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Solution
The fourth proportional to 86,206,866.80, 129,310,300.20 and 81,955,338.80 is: 122,933,008.20
Step by Step Solution
- Step 1: Write the proportion equation
86,206,866.80 : 129,310,300.20 = 81,955,338.80 : x - Step 2: Convert to fraction form
86,206,866.80/129,310,300.20 = 81,955,338.80/x - Step 3: Cross multiply
86,206,866.80x = 129,310,300.20 × 81,955,338.80 - Step 4: Simplify right side
86,206,866.80x = 10,597,669,463,220,708 - Step 5: Solve for x
x = 10,597,669,463,220,708/86,206,866.80 - Step 6: Final answer
x = 122,933,008.20
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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.