Finding the Fourth Proportional to 86,498,453,149.22, 129,617,382,161.23 and 77,071,979,197.21
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Solution
The fourth proportional to 86,498,453,149.22, 129,617,382,161.23 and 77,071,979,197.21 is: 115,491,870,869.57
Step by Step Solution
- Step 1: Write the proportion equation
86,498,453,149.22 : 129,617,382,161.23 = 77,071,979,197.21 : x - Step 2: Convert to fraction form
86,498,453,149.22/129,617,382,161.23 = 77,071,979,197.21/x - Step 3: Cross multiply
86,498,453,149.22x = 129,617,382,161.23 × 77,071,979,197.21 - Step 4: Simplify right side
86,498,453,149.22x = 9,989,868,181,527,136,829,440 - Step 5: Solve for x
x = 9,989,868,181,527,136,829,440/86,498,453,149.22 - Step 6: Final answer
x = 115,491,870,869.57
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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.