Finding the Fourth Proportional to 131,381,773.96, 181,299,521.10 and 72,640,910.92
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Solution
The fourth proportional to 131,381,773.96, 181,299,521.10 and 72,640,910.92 is: 100,240,405.99
Step by Step Solution
- Step 1: Write the proportion equation
131,381,773.96 : 181,299,521.10 = 72,640,910.92 : x - Step 2: Convert to fraction form
131,381,773.96/181,299,521.10 = 72,640,910.92/x - Step 3: Cross multiply
131,381,773.96x = 181,299,521.10 × 72,640,910.92 - Step 4: Simplify right side
131,381,773.96x = 13,169,762,362,063,760 - Step 5: Solve for x
x = 13,169,762,362,063,760/131,381,773.96 - Step 6: Final answer
x = 100,240,405.99
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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.