Finding the Fourth Proportional to 80,986,368.80, 121,479,553.20 and 74,750,794.40
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Solution
The fourth proportional to 80,986,368.80, 121,479,553.20 and 74,750,794.40 is: 112,126,191.60
Step by Step Solution
- Step 1: Write the proportion equation
80,986,368.80 : 121,479,553.20 = 74,750,794.40 : x - Step 2: Convert to fraction form
80,986,368.80/121,479,553.20 = 74,750,794.40/x - Step 3: Cross multiply
80,986,368.80x = 121,479,553.20 × 74,750,794.40 - Step 4: Simplify right side
80,986,368.80x = 9,080,693,105,057,064 - Step 5: Solve for x
x = 9,080,693,105,057,064/80,986,368.80 - Step 6: Final answer
x = 112,126,191.60
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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.