Finding the Fourth Proportional to 128,343,130.13, 192,514,395.79 and 84,305,391.89
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Solution
The fourth proportional to 128,343,130.13, 192,514,395.79 and 84,305,391.89 is: 126,457,891.17
Step by Step Solution
- Step 1: Write the proportion equation
128,343,130.13 : 192,514,395.79 = 84,305,391.89 : x - Step 2: Convert to fraction form
128,343,130.13/192,514,395.79 = 84,305,391.89/x - Step 3: Cross multiply
128,343,130.13x = 192,514,395.79 × 84,305,391.89 - Step 4: Simplify right side
128,343,130.13x = 16,230,001,581,421,026 - Step 5: Solve for x
x = 16,230,001,581,421,026/128,343,130.13 - Step 6: Final answer
x = 126,457,891.17
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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.