Finding the Fourth Proportional to 12,128,753,400.45, 18,193,105,703.42 and 11,390,680,612.09
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Solution
The fourth proportional to 12,128,753,400.45, 18,193,105,703.42 and 11,390,680,612.09 is: 17,085,998,005.53
Step by Step Solution
- Step 1: Write the proportion equation
12,128,753,400.45 : 18,193,105,703.42 = 11,390,680,612.09 : x - Step 2: Convert to fraction form
12,128,753,400.45/18,193,105,703.42 = 11,390,680,612.09/x - Step 3: Cross multiply
12,128,753,400.45x = 18,193,105,703.42 × 11,390,680,612.09 - Step 4: Simplify right side
12,128,753,400.45x = 207,231,856,409,650,167,808 - Step 5: Solve for x
x = 207,231,856,409,650,167,808/12,128,753,400.45 - Step 6: Final answer
x = 17,085,998,005.53
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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.