Finding the Fourth Proportional to 86,206,851.20, 129,310,276.80 and 70,901,350.40
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Solution
The fourth proportional to 86,206,851.20, 129,310,276.80 and 70,901,350.40 is: 106,352,025.60
Step by Step Solution
- Step 1: Write the proportion equation
86,206,851.20 : 129,310,276.80 = 70,901,350.40 : x - Step 2: Convert to fraction form
86,206,851.20/129,310,276.80 = 70,901,350.40/x - Step 3: Cross multiply
86,206,851.20x = 129,310,276.80 × 70,901,350.40 - Step 4: Simplify right side
86,206,851.20x = 9,168,273,245,717,792 - Step 5: Solve for x
x = 9,168,273,245,717,792/86,206,851.20 - Step 6: Final answer
x = 106,352,025.60
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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.