Finding the Fourth Proportional to 117,820,468.42, 162,592,245.74 and 68,289,572.33
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Solution
The fourth proportional to 117,820,468.42, 162,592,245.74 and 68,289,572.33 is: 94,239,609.42
Step by Step Solution
- Step 1: Write the proportion equation
117,820,468.42 : 162,592,245.74 = 68,289,572.33 : x - Step 2: Convert to fraction form
117,820,468.42/162,592,245.74 = 68,289,572.33/x - Step 3: Cross multiply
117,820,468.42x = 162,592,245.74 × 68,289,572.33 - Step 4: Simplify right side
117,820,468.42x = 11,103,354,925,758,864 - Step 5: Solve for x
x = 11,103,354,925,758,864/117,820,468.42 - Step 6: Final answer
x = 94,239,609.42
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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.