Finding the Fourth Proportional to 86,640,192,092.20, 129,960,288,138.30 and 74,655,984,965.80
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Solution
The fourth proportional to 86,640,192,092.20, 129,960,288,138.30 and 74,655,984,965.80 is: 111,983,977,448.70
Step by Step Solution
- Step 1: Write the proportion equation
86,640,192,092.20 : 129,960,288,138.30 = 74,655,984,965.80 : x - Step 2: Convert to fraction form
86,640,192,092.20/129,960,288,138.30 = 74,655,984,965.80/x - Step 3: Cross multiply
86,640,192,092.20x = 129,960,288,138.30 × 74,655,984,965.80 - Step 4: Simplify right side
86,640,192,092.20x = 9,702,313,317,403,960,803,328 - Step 5: Solve for x
x = 9,702,313,317,403,960,803,328/86,640,192,092.20 - Step 6: Final answer
x = 111,983,977,448.70
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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.