Finding the Fourth Proportional to 153,367,320.96, 211,618,411.92 and 87,283,890.14
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Solution
The fourth proportional to 153,367,320.96, 211,618,411.92 and 87,283,890.14 is: 120,435,553.68
Step by Step Solution
- Step 1: Write the proportion equation
153,367,320.96 : 211,618,411.92 = 87,283,890.14 : x - Step 2: Convert to fraction form
153,367,320.96/211,618,411.92 = 87,283,890.14/x - Step 3: Cross multiply
153,367,320.96x = 211,618,411.92 × 87,283,890.14 - Step 4: Simplify right side
153,367,320.96x = 18,470,878,216,568,456 - Step 5: Solve for x
x = 18,470,878,216,568,456/153,367,320.96 - Step 6: Final answer
x = 120,435,553.68
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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.