Finding the Fourth Proportional to 151,514,781.16, 209,090,307.90 and 81,900,163.12
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Solution
The fourth proportional to 151,514,781.16, 209,090,307.90 and 81,900,163.12 is: 113,022,176.40
Step by Step Solution
- Step 1: Write the proportion equation
151,514,781.16 : 209,090,307.90 = 81,900,163.12 : x - Step 2: Convert to fraction form
151,514,781.16/209,090,307.90 = 81,900,163.12/x - Step 3: Cross multiply
151,514,781.16x = 209,090,307.90 × 81,900,163.12 - Step 4: Simplify right side
151,514,781.16x = 17,124,530,323,821,026 - Step 5: Solve for x
x = 17,124,530,323,821,026/151,514,781.16 - Step 6: Final answer
x = 113,022,176.40
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.