Finding the Fourth Proportional to 121,192,782.23, 167,247,109.65 and 68,985,179.93
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Solution
The fourth proportional to 121,192,782.23, 167,247,109.65 and 68,985,179.93 is: 95,200,157.46
Step by Step Solution
- Step 1: Write the proportion equation
121,192,782.23 : 167,247,109.65 = 68,985,179.93 : x - Step 2: Convert to fraction form
121,192,782.23/167,247,109.65 = 68,985,179.93/x - Step 3: Cross multiply
121,192,782.23x = 167,247,109.65 × 68,985,179.93 - Step 4: Simplify right side
121,192,782.23x = 11,537,571,951,141,454 - Step 5: Solve for x
x = 11,537,571,951,141,454/121,192,782.23 - Step 6: Final answer
x = 95,200,157.46
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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.